You must have "Full Access" or "Limited Access - HQ Tools" permissions to create a group from a registration.
Sign in to "SportsEngine HQ."
Once in "SportsEngine HQ," click Registration, then choose Registrations.
Click on the "title" of the registration you want to create a group.
Create a Saved Report.
In the top-right portion of the saved report, click Create Smart Group.
Name the group and click Create Smart Group.