How to edit after submission?

You can edit submissions as shown on this guide: https://www.jotform.com/help/325-How-to-Edit-Submissions-Made-on-Your-Forms

If you want to let user edit their submission, please follow this guide: https://www.jotform.com/help/40-How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date

Let us know if you need more help.