Is there any way to manage avaliable subscriptions based on Joomla! 1.7 groups or acls? For instance I'd like one group of user to automatically be signed up and allowed to edit in their profile their subscription to one Constant Contacts newsletter, however I don't want that grop of users to have visibility to Other newsletters. Basically I'd like to restrict availiable subscriptions based on Joomla! 1.7 groups or acs. Is there any easy way to accomplish this?