Classipress paid featured ad posting
I would like to setup classipress ad postings as "regular ads" and "featured ads" At the bottom of the listing form there will be a check box user can select for featured ads for a price $. If the check box is selected as a " featured ad, on the next page user will be given the payment form and required details. Once the payment form is complete and also upon payment validation is successful user can preview the ad and submit which in turn process the payment and also complete the payment process. How do I setup this process?