private function doUnenrollUsers()
 {
     $smarty = $this->getSmartyVar();
     $currentUser = $this->getCurrentUser();
     if ($_GET['type'] == 'job') {
         foreach (EfrontJob::getAllJobs() as $key => $value) {
             $entities[$value['job_description_ID']] = $value['description'];
         }
         if ($_GET['entry']) {
             $entity = new EfrontJob($_GET['entry']);
             $courses = $entity->getJobCourses(array('archive' => false));
             $users = $entity->getEmployees();
         }
     } elseif ($_GET['type'] == 'branch') {
         foreach (EfrontBranch::getAllBranches() as $key => $value) {
             $entities[$value['branch_ID']] = $value['name'];
         }
         if ($_GET['entry']) {
             $entity = new EfrontBranch($_GET['entry']);
             $courses = $entity->getBranchCourses(array('archive' => false));
             $users = $entity->getEmployees();
         }
     } elseif ($_GET['type'] == 'group') {
         foreach (EfrontGroup::getGroups() as $key => $value) {
             $entities[$value['id']] = $value['name'];
         }
         if ($_GET['entry']) {
             $entity = new EfrontGroup($_GET['entry']);
             $courses = $entity->getGroupCourses(array('archive' => false));
             $users = $entity->getGroupUsers();
         }
     }
     if ($_GET['ajax'] && $_GET['remove_users_from_courses']) {
         try {
             foreach ($courses as $course) {
                 $course->removeUsers($users);
             }
             exit;
         } catch (Exception $e) {
             handleAjaxExceptions($e);
         }
     }
     $smarty->assign("T_ENTITIES_LIST", $entities);
 }