How to Allow Responders to Save Form Progress
On the edit form screen, go to Settings -> Others, and enable Auto Save Form Progress. Here you can specify the number of days form progress should be saved.

Progress is automatically saved as the responder fills the form - there is no manual action required.
The saved progress is not available to admins. Form information can only be seen when the user submits the form.
Originally published July 2, 2020 5:15 pm. Updated September 24, 2022.