Parents and other people that want to promote your business can join your Hub at any time, and you don't even have to add them to your Hub. During the registration process, if they have not received a Rewards Number or Temporary Registration Code, they can Create New Profile.
These profiles show up in your Hub as Leads with a Self Registered Tag. You can reach out to them to find out how they would like to participate in your rewards program.
Self-Registered leads need to be converted to members and given a status tag before they can redeem points. The process just takes a second.
Then you can add tags to their profile so that they can have access to the areas of the Hub that you want them to, just like usual.