Go to Point of Sale, and click View Invoices.

Click Refund for the invoice you need to refund.

Click Checkout.

Enter the refund amount, and click Refund.
The confirmation message is displayed.

NOTE: In case the amount includes any tipping, it will also be automatically refunded to the customer

The customer can tap, dip, or swipe the card on the terminal.

Click Dismiss.

Click Confirm.

A print job will be assigned to the printer and the associated printer should print the receipt.