You have the ability to apply a PIN Code to all your player profiles. This allows you to secure any player profile associated with your Blacknut account.
The main profile associated with your account is the only one allowed to manage all other profiles associated with the account.
If you want to apply parental controls to certain profiles, such as children's accounts for example, it is advisable to associate a PIN code to the main account so that they cannot access it and change the restrictions applied.