If you would like to allow your users to edit their entry for a limited amount of time, you can add this to a child theme's functions.php file or the 'Code Snippets' plugin. Just replace 19 with the ID of your form and replace 24 with the number of hours that you want to allow editing.

Use [25 show_first=1] to show one file. Use [25 show_first=3] to show the first three files.