What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
If I understand correctly you want to create a copy of an item in the Payment tool on the same form, is that correct?
If so, unfortunately, it's not possible to do this. You need to manually create each item in the payment tool. If you're referring to clone items from one form to another, then you can do this by cloning the form from your account and this will also going to create a copy of the items in your payment tool of the cloned form.
Should you require further assistance, please let us know.