Here is how to set up an account for them linked to yours:
Instructions for creating your child’s account:
The account creation is easiest to do from the web version of our booking site, (not the app) : log in to your account here
Log into to your own account first > click My Profile
Below the blue bar you’ll see a button to add a family member. You can proceed through those steps and sign the waiver.
To purchase the pass under your child’s account or to schedule their class, go back to My Profile and then select their name. It will switch the account so any actions taken are under their name. That part works the same on the app as well.