5.4.5. How to return and refund products on POS?

To return a product and refund to customer, from POS main view, you need to insert negative values: Select the product your customer wants to return, use the +/- button and enter the quantity they need to return. If they need to return multiple products, repeat the process.

As you can see, the total is negative, to end the refund you simply have to process the payment: