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.
Yes this is possible to do in the form.
Please check this user guide https://www.jotform.com/help/97-How-to-Save-Forms-to-Continue-Later
The key here is -- multiple users must know or have access to the email link that will be created so that each one can open the form and do the necessary changes/modifications to the form.
The form will be finalize or SAVED once it is SUBMITTED. So, the user who will submit the form should be the final user who will be allowed to access the form.
Here is a demo form http://form.jotform.co/form/32927314628862 from the user guide that you can test.
If you test submit the demo form, you will see a link like this