i have forget about this thread .
Micke your solution will add a unique title for all the support manager pages . take this one , and every page has it own titles .
in client_tickets.php controller under this line :
$this->set("string", $this->DataStructure->create("string"));
add :
$page_title = Language::_("ClientTickets." . Loader::fromCamelCase($this->action ? $this->action : "index") . ".page_title", true);
$this->structure->set("page_title", $page_title);
now every page has it own title .
also is better to add a new phrase language in clients_tickets
$lang['ClientTickets.departments.page_title'] = "Support Manager > Select Departement ";