...
You can also move users from one family to another or even add users who were not covered by the scan. To do this click click the Add User button in the top-right corner of the family panel. A box appears prompting for the username you wish to add to the family.
...
When a family is left with no users, the Delete Family button is displayed in the upper-right corner of the family panel. It allows you to remove it from the set.
...