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.
Actually, you don't need https server to do that, because JotForm is doing it by default. Recently, JotForm completely moved to secure SSL, so you don't need to worry about the secure connection anymore. You can find the detailed post about this feature from the link below:
Also, you find the tutorial about how to create approval form from the following link:
If you want to know more, please let us know.
Please follow up here: http://developers.jotform.com/forum/post/564a245a6c7f9b7c75000079