diff --git a/inc/config.class.php b/inc/config.class.php
index 78763852..fb3783cf 100644
--- a/inc/config.class.php
+++ b/inc/config.class.php
@@ -170,6 +170,7 @@ function hide_show_history(val) {
             0 => __("No"),
             1 => __('First'),
             2 => __('Last'),
+            3 => __('Default user\'s group', 'escalade')
       ];
 
       $rand = mt_rand();
diff --git a/inc/ticket.class.php b/inc/ticket.class.php
index 793be334..8a5e8cc3 100644
--- a/inc/ticket.class.php
+++ b/inc/ticket.class.php
@@ -366,31 +366,46 @@ static function assignUserGroup(Ticket $ticket) {
             || $_SESSION['plugins']['escalade']['config']['use_assign_user_group_creation'] == 0) {
          return false;
       }
-
+      
       if (isset($ticket->input['_users_id_assign'])
           && $ticket->input['_users_id_assign'] > 0
           && (!isset($ticket->input['_groups_id_assign'])
             || $ticket->input['_groups_id_assign'] <= 0)) {
-         if ($_SESSION['plugins']['escalade']['config']['use_assign_user_group'] == 1) {
-            // First group
-            $ticket->input['_groups_id_assign']
-               = PluginEscaladeUser::getTechnicianGroup($ticket->input['entities_id'],
-                                                         $ticket->input['_users_id_assign'],
-                                                         true);
-            //prevent adding empty group
-            if (empty($ticket->input['_groups_id_assign'])) {
-               unset($ticket->input['_groups_id_assign']);
-            }
-         } else {
-            // All groups
-            $ticket->input['_additional_groups_assigns']
-               = PluginEscaladeUser::getTechnicianGroup($ticket->input['entities_id'],
-                                                         $ticket->input['_users_id_assign'],
-                                                         false);
-            //prevent adding empty group
-            if (empty($ticket->input['_additional_groups_assigns'])) {
-               unset($ticket->input['_additional_groups_assigns']);
-            }
+         switch ($_SESSION['plugins']['escalade']['config']['use_assign_user_group']) {
+            case 1 : 
+               // First group
+               $ticket->input['_groups_id_assign']
+                  = PluginEscaladeUser::getTechnicianGroup($ticket->input['entities_id'],
+                                                            $ticket->input['_users_id_assign'],
+                                                            true);
+               //prevent adding empty group
+               if (empty($ticket->input['_groups_id_assign'])) {
+                  unset($ticket->input['_groups_id_assign']);
+               }
+               break;
+            case 2:
+               // Last groups
+               $ticket->input['_additional_groups_assigns']
+                  = PluginEscaladeUser::getTechnicianGroup($ticket->input['entities_id'],
+                                                            $ticket->input['_users_id_assign'],
+                                                            false);
+               //prevent adding empty group
+               if (empty($ticket->input['_additional_groups_assigns'])) {
+                  unset($ticket->input['_additional_groups_assigns']);
+               }
+               break;
+            
+            case 3:
+               //User's default group
+               $ticket->input['_additional_groups_assigns'] 
+                  = PluginEscaladeUser::getUserDefaultGroup($item->fields['users_id']);
+               if (empty($ticket->input['_additional_groups_assigns'])) {
+                  //prevent adding empty group
+                  if (empty($ticket->input['_additional_groups_assigns'])) {
+                     unset($ticket->input['_additional_groups_assigns']);
+                  }
+               }
+               break;
          }
       }
 
@@ -534,16 +549,22 @@ static function item_add_user(Ticket_User $item, $type = CommonITILActor::ASSIGN
          return true;
       }
 
-      if ($_SESSION['plugins']['escalade']['config']['use_assign_user_group'] == 1) {
-         // First group
-         $groups_id = PluginEscaladeUser::getTechnicianGroup($ticket->fields['entities_id'],
-                                                      $item->fields['users_id'],
-                                                      true);
-      } else {
-         // All groups
-         $groups_id = PluginEscaladeUser::getTechnicianGroup($ticket->fields['entities_id'],
-                                                      $item->fields['users_id'],
-                                                      false);
+      switch ($_SESSION['plugins']['escalade']['config']['use_assign_user_group']) {
+         case 1: 
+            // First group
+            $groups_id = PluginEscaladeUser::getTechnicianGroup($ticket->fields['entities_id'],
+                                                         $item->fields['users_id'],
+                                                         true);
+            break;
+         case 2:
+            // All groups
+            $groups_id = PluginEscaladeUser::getTechnicianGroup($ticket->fields['entities_id'],
+                                                         $item->fields['users_id'],
+                                                         false);
+            break;
+         case 3:
+            $groups_id = PluginEscaladeUser::getUserDefaultGroup($item->fields['users_id']);
+            break;
       }
 
       if (!empty($groups_id)) {
diff --git a/inc/user.class.php b/inc/user.class.php
index 177e8a0a..7351bd95 100644
--- a/inc/user.class.php
+++ b/inc/user.class.php
@@ -107,6 +107,17 @@ static function getTechnicianGroup($entity, $userid, $first = true) {
       return self::getUserGroup($entity, $userid, '`is_assign`', $first);
    }
 
+   static function getUserDefaultGroup($users_id) {
+      $groups_id = 0;
+
+      $user = new User();
+      $user->getFromDB($users_id);
+      if ($user->fields['groups_id']) {
+         $groups_id = $user->fields['groups_id'];
+      }
+      return $groups_id;
+   }
+   
    function showForm($ID, array $options = []) {
 
       $is_exist = $this->getFromDBByCrit(['users_id' => $ID]);