I have a user profile service application set up, and now I want to import profiles from an AD, but I don't want all users, only those that are members of a given AD group. How do I do that?
You can edit the User Profile Service Synchronization Connection to Active Directory (Central Admin > Manage Service Applications > User Profile Service > Configure Synchronization Connections > Select Connection > Edit).
Then only select the specific group in the Containers window, and save. This will limit the User Profile Service Synchronization to only synchronize this group.