thanking you sir its working..i have small doubt sir how to add the page.. i mean when staff was click on the editable option the page was empty displayed. i need one text message are display on that page like that "You have No Rights on the Editable ption"

OK, then use this instead:

if ( !$this->sys->IsAdmin() )
{
	echo "You have No Rights on the Editable ption";
	exit;
}