We call the parent’s master account "Parent’s Wallet," and it works pretty much like a real wallet. Parents add money to their Parent’s Wallet and then use that money to send and approve greenlights for their kids. Only parents can see and edit the Parent’s Wallet.
To view and edit your Parent's Wallet:
1. Navigate to the side bar menu, which is located in the upper left corner of the app
2. Click your name, which is displayed at the top of the page
3. Choose "Parent's Wallet" and you'll see your balance, the option to set auto-funding preferences, the option to add money now, and the option to view your funding accounts.