Form Submission: Limit to One Submission Per User

2.) 1 form submission per user.. how can we achieve that?

Hi MannaJS,

Thank you for reaching out to Jotform Support. You can prevent the same person from filling out your form multiple times from the same network using the Unique Submission feature. Let me show you how:

1. In Form Builder, in the orange navigation bar at the top of the page, click on Settings. 
2. Next, click on Show More Options.
3. Now, scroll down to the Unique Submission section and select either Check Cookies Only or Check Cookies and IP Address.

Check out the screencast below to see how it'll work:

Give it a try and let us know if you have any other questions.