Open Directory users with multiple group

[Dagger2b]

I need to add OD users to several groups and have all of them apply. Currently users in more than one group must choose which group they want when they login. The reason for this is because our institution is based on AD. In AD we have a group defined for each seperate printer and network share. Now we are beginning to implement OD and mirror AD groups for auto mounting and printer assignment on our Macintosh clients.