We have a policy where we charge a freight amount on an order that is under $500.00

For example, if an order is $256.50 we would charge a 15% on freight, however we currently have to do this manualy.

What I would love to see is the ability to either change the current drop down for Discount, OR have a new drop down where you can apply specific (pre set up) Freight Charges, so it would automatically add the % to the order depending on what one you have selected!