I would like to be able to delegate ownership of specific topics within community/activity group pages, classroom pages, etc, to members of the group who are not owners of the group and who cannot edit the bulletin board or other topics that they are not managers of. 

We currently have a faculty administration center as a group. Our Academic Administrator maintains the bulletin board, but we have other people in charge of advising, NEASC committee groups, etc, and we would like those people to be able to maintain specific topics within the group without allowing them to have full access to all other groups or the main bulletin board.