WP User Manager, upon activation creates a "Primary" Field group. This group manages the fields on the registration form and into the profile edit form. Into a future update, the "Primary" group will also manage the display of the first profile tab into the users profiles page.
Creating new field groups
An addon is being developed that will allow you to create new field groups with unlimited custom fields.
Customizing a field group
Each group can have it's name and description. Into a future update the name and description will be displayed within the user's profile page into the 1st tab. Currently it's not displayed anywhere and serves just as reference.
The "group settings" window provides you 2 options to customize the name and description of each group. Once you're done with the customization, press the "Save group settings" button to save your changes.