Hi Ann, the order amount and order quantity calculations will be added by default. You can add discount, delivery fee, tax and net amount calculations as required. Calculate discount In the Neartail Edit page, click on the Add price field button > select Discount and click Next > select Percentage and click Next > enter the discount percentage and click Create. You can also apply a fixed amount or apply a discount based on coupon code. Calculate amount to be paid In the Neartail Edit page, click on the Add price field button > select Net amount and click Next > select Standard calculation using NETTOTAL() formula and click Next > click Create.