how to restrict child's account payment option to iTunes gift cards only
i set up an apple ID for my child under 13. The default is to charge parents credit card for purchases. I bought my child an iTunes gift card and would like to limit Her purchase to this amount. The idea is she is responsible for topping up her account when she needs to. However the default is to ask to buy and its linkEd to parents account. How should I modify the setting so I can just limit her purchase to amount on her gift card