Can we set how many submissions per IP address on a form?

We would like to set a maximum of 4 submissions per IP address per day on a form we use. Is that something we can do? Often many family members will all fill out a form in one day, but we need to get serious about stopping spammers after an experience last week.

Please check the article on the link below:

https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

You can set a unique submission for cookies (same browser), or for IP which allows only one submission per network.

So in your case I would suggest to use the check cookies only.