Can I customize and/or add to the fields that are shown on the User Profile page?

Yes, you have the ability to edit any existing user fields that display on the user Profile page (Fig. 1), as well as add any custom fields you would like to. To edit or add profile fields:

1. Navigate to Settings > Users > User Fields. This page will allow you to control which user information fields are displayed, and which are required on several forms throughout the site. Your siteincludes a wide selection of fields that you can added to a user’s Profile. You may also use this page to create additional custom fields, and to change the order in which the fields show up on forms. 
2. Use the Checkboxes in each row/column to make that item required or to have the field shown. 
3. You can rearrange the order of the items by clicking and holding the icon and dragging the item up or down the list.
4. If you wish to create a custom field, click the “Add Custom Field” button in the upper right of the screen
5. In the popup window, enter the field name in the text box and select the field type with the dropdown menu. 
6. Enter the appropriate information in the fields if given. 
7. Click the "Save” button to save the custom field.

Fig. 1 User Fields