1) Add & Manage Users - This section simply allows you to add different users to your intranet system as well as managing the different users within it. Within managing, this can include adjusting what parts they have access to viewing / editing.

2) Add & Manage Roles - This section allows you to add people to different roles within the intranet system. For example, someone could be given admin rights which means that they would have pretty much full access to anything within the intranet system, or if someone was to move from one department to another, then you can adjust which role they have within your company.

3) Customize User Profile Fields - This section gives you the ability to see the profile information of the people who hold accounts within your intranet system. This can be useful if, for example, you needed a specific person in your company's email address.