1. After adding the products to the current sale, click on Pay Bill at the bottom of the billing screen

2. Enter the Tender payment value and click the corresponding payment type

Check the below image, the value of the bill is Rs.179 whereas Rs.100 has been settled by Card and the balance receivable amount is Rs.79. Customer can settle the balance Rs.79 by any other payment type

3. If the total pay value is equal to or exceeds the bill value, the sale will be completed