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.
As we don't allow password fields on our forms, you would need embed the form into a web page (please see this guide and this one) and then password protect that page. The following video describes one method:
but there are others. Google how to password protect a web page and several results will be returned.
If you need further assistance, please inform us.