[Zope] How does GroupUserFolder work ?

Hi, I would like to understand what exactly GroupUserFolder is. What I want to do is that each group is independent, with its own private forum, documents, members, calendar, etc. I would like a user have the ability to belong one or more groups. I would like some users have the ability to register others inside groups. Finally, I would like a user log in and after he has the ability to choose a group to work with. (In fact I would like something like groove) Is GroupUSerFolder my solution? Thanks. Patrick Gelin Chef de projet RPN Office de la Statistique et de l'Informatique Scolaire Tour Espace-Citée, 4ième étage CH-2300 La Chaux-de-Fonds Tél: +41 (0)32 919 79 13 Email: patrick.gelin@rpn.ch