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.
Perhaps I can offer some help. There is no password protection tool. There is though some work around options. See the posting.
After looking a bit closer at your question I offered up the wrong answer. I don't believe this is possible but I will let JotForm rep answer this for you.
When you add subusers you grant them access to forms. Don't select the forms you want to protect.