Activating the Change Feature in Simple View

For this operation;

Admin => Custom Definitions => Custom Settings => View Settings => "Open Calculation Window for Cash Payments" option is selected.

After the products are selected, the "CASH" button is pressed and a calculation window appears. In this window, the money given by the customer is written into the "Payment Amount" field and you can show the difference between the payment given by the customer and the total, that is, the remaining.