There have been a couple of questions on this and didn’'t see an answer, so…
Is there any way to integrate group membership into the permissions set for a persistent chat room? I want to give a group “member” permissions to a room. Call me lazy, but I don’'t want to have to administer permissions for both the user and their applicable rooms.
the idea if I did understand it is really interesting, unfortunately I’'m not aware of such a feature. If some more users like the idea the developers may fill a new feature issue.
Let me extend your example, I hope this goes in to the right direction, eg:
Server-Group: “Accounting” with some members
Conference-Room: “Accounting” with same members (room req. membership permission)
For daily use the group/roster will be fine but once a week a meeting a conference is scheduled and then everybody is happy to have a room.
There is a group say “Sales” with users: Saler1, Saler2,… Saler125
Then you create Room “Salers” and in Room Permissions enter Sales as a member, so finally you would have a Sales group as a member. Or maybe it should add all group’'s users by one automaticly, so you would have an opportunity to remove some of users.