[TYPO3] [Typo3] viewing or filtering frontend users by usergroup in backend

[Onno Schuit]

Hi All,

Does anybody have a hint or tip for filtering frontend users by 
usergroup in the backend?

I know you can order the user records by the field "Groups", but I have 
an educational site with 2000 plus (and growing) users, so any option to 
filter or constrain this list would be very welcome indeed.

Cheers,
Onno