I apologize but I am confused about the Coupons. I have it set to YES for "Show Coupon code in Payments Management" in the Configuration. I see it in the Payments Management, the new Coupon column that is. Yet there is no field for it on my site, do I need to create the new field? And if so, does it apply the coupon before it charges there credit card?
You can edit the form. In the form setting, there is a field called Enable Coupon. Set it to Yes and the coupon code will be displayed on your form. No need to create an additional custom field.