With User Profile Plus added to a page in your site, you will have a variety of activities you can perform directly from the web part. The left navigation window may be configured to let you view users alphabetically or by department. You can view (or edit if it has been configured) your own user profile. The web part allows you to search profile data through the simple search box; or when you click on the Advanced Search box, you have more options by which to search for users.
The Advanced Search window can be configured to show the following display options:
If you see different columns, check with your site administrator to see whether it has been configured with a different set of criteria.