Question about saving information to finish form later

Can you save a form in progress and return later to finish it?  I see the setting that seems to make this available, but there is not a button that says, "Save."

You can do this in two different ways.

1. Enable autofill

This is the easiest approach. 

How to Enable Auto Fill on Forms

2. Save forms and continue later feature

Using this approach you create a start form that loads a main form with a session id parameter. The main form must be broken up into pages. And once the next page button is pressed each page is saved.

How to Save Forms and Continue Later