How do I update/add coupon codes?

Your info on the website does not help because it does not tell me how to get to step 1. I need step by step instructions from when i come to your website to where I need to go to update coupon codes. 

Hi,

We actually have a guide on exactly that:

http://www.jotform.com/help/233-How-To-Add-Coupon-Code-in-the-Payment-Form

This includes step by step instructions on how to add a coupon code to your payment form.  The guide also includes links on how to setup your initial payment form if you have not done so already.

Let us know if you have any further questions and we will be happy to help.