There are two ways to get your change back after your child makes a purchase.
1. New Greenlight: When you add money to your child's card and create a Greenlight, check the box that says "Return change to me."
2. Existing Greenlight: Open the existing Greenlight and click the "..." icon at the top right of your screen. Select "Keep/Return the Change" and then select "Automatically Return Change To Me."
Please note, change will be returned to your Parent Wallet at the end of the day after your child makes a purchase using this Greenlight.
Sorry kiddos, but child accounts cannot change this setting!