96.How to add backend sub menus in social engine?

eg:
$sql['1.1.4.45']    = "INSERT INTO `engine4_core_menuitems` (`id`, `name`, `module`, `label`, `plugin`, `params`, `menu`, `submenu`, `enabled`, `custom`, `order`) VALUES (NULL, 'core_admin_main_manage_advertisement', 'user', 'Manage Advertisement', '', '{\"route\":\"admin_default\",\"module\":\"user\",
                   \"controller\":\"manage\",\"action\":\"advertisements\"}', 'core_admin_main_manage', NULL, '1', '0', '999');";

user/views/scripts/admin-manage/advertisements.tpl
public function advertisementsAction(){

}