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.
Do you mean to say that you want to create a workflow based form where form can be submitted by user and then it is sent to some other user or admin to approve it by adding signature?
Though there is no built in feature to achieve this but with a little workaround it is possible to achieve your requirement. You may like to take a look at the following thread where I have explained this step by step: https://www.jotform.com/answers/401633
Hope this helps.
Do get back to us if you have any questions.