JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Could you provide us with more information on your requirement so that we can provide you with necessary assistance? If you want to add conditions based on the selected products in the payment field, you may try setting up as shown below:
We will be happy to help. Let us know if you are referring something different. We will be happy to assist.