Go to My Hub > My Account and open the Sanction Organizations tab. Add your club's number for each organization you compete under.

This matters more than it looks:

• A meet sanctioned by an organization can only be entered by clubs and athletes with a number for that organization.
• USA Gymnastics reservations are matched to your club by your USA Gymnastics number. If it is missing or wrong, your reservations will not appear.

Each athlete also needs their own number on their roster entry.