Many climbing centres will allow children at the age of 16+ to have their own accounts and to no longer be tied to an adult account.

Decoupling is very straightforward.

First navigate to Profile > Family
Select the ⚙️ cog icon for the child/family member to decouple from the adult account.

Next, select the Decouple option.
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The final step is to add an email address for the newly decoupled account so that they can login and manage their account moving forwards.