Can I save and resume later when completing a JotForm?

When using a JotForm is it possible to set it up so a user can save the form data and resume completing the rest of the form at a later time?

Or must all info on the JotForm be completed in 1 sitting in order to be submitted?

You can continue later, and for that purpose, you can do it in two ways:

1) Enabling the autofill feature, which will save the data in your browser local storage, so you need to get back to the same device and browser to continue with the form: https://www.jotform.com/help/227-How-to-Enable-Auto-Fill-on-Forms 

2) Generating a URL session to be able to continue filling your form from any device and browser: https://www.jotform.com/help/97-How-to-Save-Forms-and-Continue-Later 

Open a new thread if you need anything else, we will be glad to assist you.