newbie xwiki user - users and groups

Hi, We just had the newest xwiki version installed on our machines, and it seems to be very different than the earlier version. The documentation tells you how to give rights to spaces, pages, etc but it doesn't tell you how to create the users and the groups in the first place. The old wiki had a button to create a group or user, but this wiki doesn't. How do I create users and groups? Thanks for your help. -- To Your Victory, Annika A. Annika Smith Author of "Room 4 Rent:Turn Your Extra Room Into Extra Money!" http://clues.rentrooms4cash.com Get Healthy. Lose Weight. Get Rich. http://annika.isagenix.com