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.
I'm not sure if I understand your query correctly. Do you want to allow the users to upload a file using the form? If so, you may add the File upload field to your form so that the files can uploaded using it.
You can also allow to upload multiple files at once by using the option Allow Multiple from the tool bar or Upload field properties.
Hope this information helps! Let us know if you are referring to something different. We will be happy to help.