Welcome to the Centrify Express community.
Notice that you're adding to a thread from 2011.
The features referenced in this post were removed from the freemium (Express) product two years ago and are part of the commercial version of the product (Standard Edition). Here's the FAQ:
Bottom-line, Express will provide AD integration and authentication, but not access control. There are several external methods that allow you to accomplish this, in addition, Standard Edition provides multiple options (like parameters, Centrify zones) and additional controls like multi-factor authentication.
If you are a commercial customer with a support contract, feel free to open a ticket with support or post in the Server Suite forum.
R.P