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.
Unfortunately, there is not a way to set a min number of required files, you can only set a max number of files and limit the file upload size per size.
If you want we could forward this thread to our second level as a feature request, though we cannot provide an ETA about when this could be or if this will be available, we will ensure to let you know as soon as we get news regarding this.