diff --git a/application/language/arabic/translations_lang.php b/application/language/arabic/translations_lang.php
index d791c44e..f82fbae6 100755
--- a/application/language/arabic/translations_lang.php
+++ b/application/language/arabic/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/bulgarian/translations_lang.php b/application/language/bulgarian/translations_lang.php
index a20ecaa5..d29d118b 100755
--- a/application/language/bulgarian/translations_lang.php
+++ b/application/language/bulgarian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/catalan/translations_lang.php b/application/language/catalan/translations_lang.php
index 6b5bc7d6..cc123d77 100644
--- a/application/language/catalan/translations_lang.php
+++ b/application/language/catalan/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Enllaç de reserva';
 $lang['add_new_event'] = 'Afegeix un nou esdeveniment';
 $lang['what_kind_of_event'] = 'Quin tipus d\'esdeveniment voleu afegir?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/chinese/translations_lang.php b/application/language/chinese/translations_lang.php
index bc449dc1..5be7ea65 100755
--- a/application/language/chinese/translations_lang.php
+++ b/application/language/chinese/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/czech/translations_lang.php b/application/language/czech/translations_lang.php
index 841fc3ea..cf66a0af 100644
--- a/application/language/czech/translations_lang.php
+++ b/application/language/czech/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/danish/translations_lang.php b/application/language/danish/translations_lang.php
index cae8f065..c936f997 100755
--- a/application/language/danish/translations_lang.php
+++ b/application/language/danish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/dutch/translations_lang.php b/application/language/dutch/translations_lang.php
index 73db8bfb..5055b1b7 100755
--- a/application/language/dutch/translations_lang.php
+++ b/application/language/dutch/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/english/translations_lang.php b/application/language/english/translations_lang.php
index 26ea0e94..80035733 100755
--- a/application/language/english/translations_lang.php
+++ b/application/language/english/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/estonian/translations_lang.php b/application/language/estonian/translations_lang.php
index 366ebd2a..0394343b 100644
--- a/application/language/estonian/translations_lang.php
+++ b/application/language/estonian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Broneeringu link';
 $lang['add_new_event'] = 'Lisa uus sündmus';
 $lang['what_kind_of_event'] = 'Mis laadi sündmust soovid lisada?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/finnish/translations_lang.php b/application/language/finnish/translations_lang.php
index cd3c117b..d1f8b173 100755
--- a/application/language/finnish/translations_lang.php
+++ b/application/language/finnish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/french/translations_lang.php b/application/language/french/translations_lang.php
index 741944fc..8a38717a 100755
--- a/application/language/french/translations_lang.php
+++ b/application/language/french/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/greek/translations_lang.php b/application/language/greek/translations_lang.php
index 6d13b298..5e87fa47 100755
--- a/application/language/greek/translations_lang.php
+++ b/application/language/greek/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/hebrew/translations_lang.php b/application/language/hebrew/translations_lang.php
index ef9829c7..3041ff64 100644
--- a/application/language/hebrew/translations_lang.php
+++ b/application/language/hebrew/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/hindi/translations_lang.php b/application/language/hindi/translations_lang.php
index bc47a2df..775f9cc1 100755
--- a/application/language/hindi/translations_lang.php
+++ b/application/language/hindi/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/hungarian/translations_lang.php b/application/language/hungarian/translations_lang.php
index 91c22c93..11cee8b8 100755
--- a/application/language/hungarian/translations_lang.php
+++ b/application/language/hungarian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/italian/translations_lang.php b/application/language/italian/translations_lang.php
index 6dac227c..4760134f 100755
--- a/application/language/italian/translations_lang.php
+++ b/application/language/italian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/japanese/translations_lang.php b/application/language/japanese/translations_lang.php
index 557491b5..7cb133e8 100755
--- a/application/language/japanese/translations_lang.php
+++ b/application/language/japanese/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/luxembourgish/translations_lang.php b/application/language/luxembourgish/translations_lang.php
index 6a6d8949..9768fbd6 100755
--- a/application/language/luxembourgish/translations_lang.php
+++ b/application/language/luxembourgish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/marathi/translations_lang.php b/application/language/marathi/translations_lang.php
index 2bb6b213..acf89062 100644
--- a/application/language/marathi/translations_lang.php
+++ b/application/language/marathi/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/polish/translations_lang.php b/application/language/polish/translations_lang.php
index 20e509d5..3227daf2 100755
--- a/application/language/polish/translations_lang.php
+++ b/application/language/polish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/portuguese-br/translations_lang.php b/application/language/portuguese-br/translations_lang.php
index f23abc36..4f9a3768 100755
--- a/application/language/portuguese-br/translations_lang.php
+++ b/application/language/portuguese-br/translations_lang.php
@@ -364,4 +364,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/portuguese/translations_lang.php b/application/language/portuguese/translations_lang.php
index 9dd74eb3..975576c0 100755
--- a/application/language/portuguese/translations_lang.php
+++ b/application/language/portuguese/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/romanian/translations_lang.php b/application/language/romanian/translations_lang.php
index 957725f5..0b78d1a7 100755
--- a/application/language/romanian/translations_lang.php
+++ b/application/language/romanian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/russian/translations_lang.php b/application/language/russian/translations_lang.php
index 756058d7..52274fed 100755
--- a/application/language/russian/translations_lang.php
+++ b/application/language/russian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/serbian/translations_lang.php b/application/language/serbian/translations_lang.php
index 85bc50bc..5d72b8d1 100644
--- a/application/language/serbian/translations_lang.php
+++ b/application/language/serbian/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/slovak/translations_lang.php b/application/language/slovak/translations_lang.php
index fa1d1030..111d2a18 100755
--- a/application/language/slovak/translations_lang.php
+++ b/application/language/slovak/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/spanish/translations_lang.php b/application/language/spanish/translations_lang.php
index c1935796..c7810337 100755
--- a/application/language/spanish/translations_lang.php
+++ b/application/language/spanish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/swedish/translations_lang.php b/application/language/swedish/translations_lang.php
index c50a0d91..097cfa7e 100644
--- a/application/language/swedish/translations_lang.php
+++ b/application/language/swedish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/language/turkish/translations_lang.php b/application/language/turkish/translations_lang.php
index 4aaa54be..8117783f 100755
--- a/application/language/turkish/translations_lang.php
+++ b/application/language/turkish/translations_lang.php
@@ -365,4 +365,6 @@ $lang['booking_link'] = 'Booking Link';
 $lang['add_new_event'] = 'Add New Event';
 $lang['what_kind_of_event'] = 'What kind of event would you like to add?';
 $lang['theme'] = 'Theme';
+$lang['limit_customer_visibility'] = 'Limit Customer Visibility';
+$lang['limit_customer_visibility_hint'] = 'If enabled, providers and secretaries will only be able to view and manage customers they have an appointment with.';
 // End
diff --git a/application/migrations/039_add_limit_customer_visibility_setting.php b/application/migrations/039_add_limit_customer_visibility_setting.php
new file mode 100644
index 00000000..27594218
--- /dev/null
+++ b/application/migrations/039_add_limit_customer_visibility_setting.php
@@ -0,0 +1,41 @@
+<?php defined('BASEPATH') or exit('No direct script access allowed');
+
+/* ----------------------------------------------------------------------------
+ * Easy!Appointments - Online Appointment Scheduler
+ *
+ * @package     EasyAppointments
+ * @author      A.Tselegidis <alextselegidis@gmail.com>
+ * @copyright   Copyright (c) Alex Tselegidis
+ * @license     https://opensource.org/licenses/GPL-3.0 - GPLv3
+ * @link        https://easyappointments.org
+ * @since       v1.4.0
+ * ---------------------------------------------------------------------------- */
+
+class Migration_Add_limit_customer_visibility_setting extends EA_Migration {
+    /**
+     * Upgrade method.
+     */
+    public function up()
+    {
+        if ( ! $this->db->get_where('settings', ['name' => 'limit_customer_visibility'])->num_rows())
+        {
+            $this->db->insert('settings', [
+                'create_datetime' => date('Y-m-d H:i:s'),
+                'update_datetime' => date('Y-m-d H:i:s'),
+                'name' => 'limit_customer_visibility',
+                'value' => '0'
+            ]);
+        }
+    }
+
+    /**
+     * Downgrade method.
+     */
+    public function down()
+    {
+        if ($this->db->get_where('settings', ['name' => 'limit_customer_visibility'])->num_rows())
+        {
+            $this->db->delete('settings', ['name' => 'limit_customer_visibility']);
+        }
+    }
+}
diff --git a/application/views/pages/booking_settings.php b/application/views/pages/booking_settings.php
index 874dee90..d0b23c77 100755
--- a/application/views/pages/booking_settings.php
+++ b/application/views/pages/booking_settings.php
@@ -239,6 +239,22 @@
                                     </div>
                                 </div>
 
+                                <div class="mb-3">
+                                    <div class="form-check form-switch">
+                                        <input class="form-check-input" type="checkbox" id="limit-customer-visibility"
+                                               data-field="limit_customer_visibility">
+                                        <label class="form-check-label" for="limit-customer-visibility">
+                                            <?= lang('limit_customer_visibility') ?>
+                                        </label>
+                                    </div>
+
+                                    <div class="form-text text-muted">
+                                        <small>
+                                            <?= lang('limit_customer_visibility_hint') ?>
+                                        </small>
+                                    </div>
+                                </div>
+
                                 <div class="mb-3">
                                     <div class="form-check form-switch">
                                         <input class="form-check-input" type="checkbox" id="require-captcha"