1. Configure an 'other' payment method called Exchange
  2. From Sales, click Refunds
  3. Select the order, click Continue
  4. On the Create a refund screen, select the quantity of items to refund
  5. In the Payment details section, change the payment method to Exchange
  6. Click Complete Refund (If this was a credit card, it will not refund the card)
  7. From Sales, click Daily or Advance Sales 
  8. Select the Patron and tickets to purchase
  9. Select the Other button and select Exchange
  10. Enter the amount of your Refund/Exchange from above in the Amount field
  11. Click Complete