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.
Do you want to create unique code for each of your user? You can achieve that with Unique ID widget.
If you want to have payment fields inside of your form you have to use one of JotForm payment tools.
Inside of this articles you can find out more about payment tools and how to set payment form:
I case that you want to allow your users to upload documents, you can create file upload form:
If I did not understood your question correctly, please explain in more details what you are trying to achieve.
Hope this will help. Let us know if you need further assistance.