how to limit multiple entries

Hello PHED,

You can avoid receiving duplicate entries from your form by enabling the unique submissions on your form. This user guide will help you understand how to enable it in your form: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

Another method is having a submission-specific entry, so for you to receive unique submissions on a specific question. This guide provides additional information and the steps on how to use this in your form: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question

If you have further questions or you need assistance, please let us know.

Thanks.