Adding child account can only be set up the gym admin through the admin portal.
If you are planning to add your child on your account, reach out to your gym admin and provide them your child's details such as Email, Complete Name and DOB. Email is not required if you intend to take full control of the account.
Once a child is added under the parent's account, the primary user which is the parent will be able to do bookings in behalf on the child.
The parent can switch between their account and the child by tapping the "child icon" and selecting the name of the child. A parent can have multiple child account added.
Please check out sample video below on how to use a Child account: