BuddyPress.org

@anaxent, please check this option:
http://scholarpress.github.com/buddypress-courseware/handbook.html#roles-warning
Or the video that I updated:
http://scholarpress.github.com/buddypress-courseware/

@Thomas:
The groups are mainly handled by BuddyPress, so such a request would require sub-groups functionality from upstream.

Thanks.

@thomas – this is something we are also looking at. @hnla is on the right lines, the following thread throws some more light on the problem:

https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/dynamically-create-new-sets-of-profile-fields/