Iowa - 2014-01-17

I'm a potential user. (No development skills.) I'm looking at the Demo. I don't see how to get to a place where I control access. Can anyone help me?

The blurb on the openCRX home page says "Advanced access control allows you to share information or restrict access based on user profile, role or team," but I can't find how I get to the place where I do this access control, or for example, create new users.