I cannot find a way to add a one-time processing fee to an order.
What I mean is that regardless of the quantity of my items I want to add a FLAT RATE of $20.00 to the final cost.
Does anyone know how to do that ?
Module CAT_StoreSettings: select: 'Freight Charges Flat Rate' from the 'Freight Charges Type' selector and enter 20 into field: 'Freight Charges Flat Rate'.
If you use another 'Freight Charges Type' you can use the field: 'Adjust Rate' on this module or on module CAT_ShippingRates.