Changing form answers after submitting

Hello everyone,

I’m currently trying to build a form for organizing a small event at my university.
The form is intended to be used by people who want to volunteer at that event because our group of people organizing the event is too small.
We than use the grid view as an overview how many people want to help and so on…

The form includes the time the people can volunteer as well as other minor information.

It is crucial for our event that we know how many people volunteer as well as when they help us, but the people who volunteer need an option to change their time preference or other information they submitted.

I can’t find any feature in the forms menu that allows for changing of the answers after the form is submitted. Is there any option how I can fix that problem?

Check this: