- is it possible to restrict notifications to group admin/mod only so that members of a private group are only aware of changes when visiting the private group ?
Only if you use CB Auto Actions to replace the notifications with your own notification behavior otherwise no.
- is it possible to restrict CB activities so that members are not aware of new members joining/leaving ?
You can't view group activity for groups you don't have access to so other users won't see their join/leave activity unless they're a member of that private group. Alternatively make a copy of the system action that creates the join activity and in the conditions check against the group type so it doesn't even create that activity.
- is it possible to hide the number of members for some private groups ?
You can turn Users display off entirely for a group. Then only group owner, group moderators, group admins, and CB moderators can see that information. This is a parameter within each group itself. Otherwise no you can't.
- is it possible to forbid manual joining and leaving for a private group so that join/leave is only controlled by a CBSubs plan ?
Not without blocking that functionality using CB Auto Actions.
- is it possible to display a feedback CB field on each member card so that the admin or mod can leave an appreciation in a dropdown box ? and how ? (knowing that we would have about 30 private groups in this case)
Anything is possible if you've the ability to code it. There's a trigger available (specifically gj_onDisplayUser) to add more information there so yes if you code its display and storage behavior it's doable.
krileon
