How do I make all AD users already have a particular user on their list without the need to add?
You can go to groups settings in Admin Console and enable sharing, so groups will appear automatically for everyone.
Thanks for the answer !! Where are these settings in the Admin console? Do I need to do these groups?
If you import groups from AD, they should be showing in Users and Groups menu in Admin Console.
users\groups>>groups>>[select one you need]>>edit. Choose option “Enable contact list group sharing” then input title how it will be distributed in roster. At last choose “Share group with additional users” if needed.
How to sync groups?
@speedy might have a suggestion
the groups with automaticly sync with AD. I think this happens when the cache expires. The client also may have some caching, so keep that in mind too.