How to edit jotform submissions?

You can edit your form submission from the Form Submission page. The guide below explains the process to edit the submissions:

https://www.jotform.com/help/325-How-to-Edit-Submissions-Made-on-Your-Forms 

Please let us know if this is what you are referring to. There is also an option to let your user's edit the submissions and this can be done via the emails (autoresponders) received by your users.

A related guide: How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date