BuddyPress group creation

Hi,
I have a general BuddyPress question. I'm using BuddyPress and the BuddyPress groups for members to interact around common community subjects. Now I want to have a second group structure/hierarchy where I can add groups where every group is a company. How can I do this? I've seen this question many times before but no answers, other then pointers to two year old plugins.
Thanks,
Jos