I am wondering if there is a way to have an extra box for affiliates to put a code into when they sign up. We have some affiliates doing in person marketing. They are giving customers a coupon code to use. We would like them to put into the affiliate sign up form their coupon code so we can match them up to the sales they make. Is this possible? Or is it possible to assign the coupon codes to the affiliate after they have already signed up that would match them to their sales or do we need to do this manually?