Record Customer Refund
WorkingPoint does not have a unique refund feature. But you can use the Payment or Purchase form in the bank account you used to pay back the customer. Just go to your bank account, click Record transaction > Payment or purchase and then choose the bookkeeping account you use to track returns in and the amount you refunded.
If they are returning inventory, you'll want to do an inventory adjustment to add the inventory back. To do that, go to Items List, then click the name of the item and then Add inventory on the right hand side. Then enter the quantity being returned and leave cost of goods sold as the bookkeeping account.