Hi,
to get the list of all the protected pieces of model (aka modules) of your Web Project you have to enable the Admin Area of your Web Application; this can be done from the Project Properties View. I suggest you to read this article http://www.webratio.com/learn/learningobject/How-to-use-the-protected-modules
Then to know how to connect users, groups and modules you can read this other article http://www.webratio.com/learn/learningobject/how-to-model-user-and-group-management
Let me know if you need other details
Regards,
Lucio