Licence management

Being a global organisation we have a number of groups around the world that utilse Anaplan. Each group pays for a certain number of licences. Now some of the users from one group can access another group's workspaces. Hence when we look at the active users list in tenent adminstation we  may see more active users in our workspaces than we actually have licences. Is there any facilty to tag or identify which users belong to each group so that licence management becomes easier? Cheers Alan