TFS Preview is just that – a preview. So things may not be where you’d think they are, especially if you’re used to the current version of Team Foundation Server.
I was recently asked (twice), “Okay, so I’ve got my account and project collection established, how do I get more people added to the environment so we can do some team development?”
Here’s the quick way:
For a broader overview of setting up groups, users, and security, I recommend taking a look at this video tutorial. There are several other video tutorials that you can watch, all from the Administration page on your TFS Preview site.