Your Family Account is made up of both Adult and Child Member profiles. They represent the Parent to Child relationship and can have more than one parent/supervisor, and multiple children. All supervisors within a family account can register any child members for programs, but they cannot register other supervisors.
Step 1: From your dashboard, click on "My Family Account" on the right hand side.

Step 2: Look for the "+ Add Parent" link under "Parent Participants".
If adding a child, click the +Add Player link under Player Participants.
Step 3: Fill out the information for the new member.

If you are adding a parent/supervisor, they will get a notification email with instructions on how to set their password and access their account.