Limiting a users access to specific areas is done through the Security Groups application (typically installed in the main site, otherwise accessed through the admin tools (wrench in upper right corner)).

Once you create the security groups through the Security Groups Application, you can apply that security level to pages, documents, admin areas, etc. and only users that are logged in and a member of that security group will gain access to that information.

Security FAQs

How do I create a Members Only area on the user side of the site?

You first create the security group using the Security app (accessed through the wrench in the upper right corner). Once the security group has been created, you can then apply that security level to any pages that you create.  Alternately, you can create a new Site Area and apply the security level to the whole site area. In that case, any pages, applications, etc that are in that site area will automatically get that security level applied to it.  If a user (viewer) tries to access anything that has security applied to it, will need to login before they can access that area. When they login, their user record will be checked to see that they have the proper credentials.

How do I add a user to a security group?

If you are only adding one user to a security group, you can edit their user record (using the User app - usually installed in the Main site area) on the security tab.  If you are adding multiple users, it would be more efficient to edit the security group (through the Security App). Click on the orange View Users button, then list all users and check off anyone that should be added to the group.  If the user is not listed, they do not have a user record.