How can I restrict a particular participant to fill the form only once

How to prevent a particular participant from filling the form multiple times??

Hello there,

Thanks for contacting Support!

Preventing your respondents from making multiple submissions in a form is definitely possible! This is when the Unique Submission is most useful.

Here's how you can do it:

1. Go to Settings tab and click the Show More Options button.

1. Scroll down to the Unique Submission section and select an option from the dropdown.

1. After selecting an option, notice at the top of the builder page (below the form title) that all changes have been saved.

For more details: https://www.jotform.com/help/64-how-to-set-unique-submissions-on-a-form/

Hope this helps!

Cheers,