Thank you for reaching out to us.

There are two options to choose from when you need to set a registration limit, depending on how you have configured your form.

The first option would be to limit the total number of submissions that the form can receive, from the form’s Security settings.
 
In case your form allows for multiple registrations on the same submissions, then with the second option, you can limit the number of guests at an event by setting a limit on the Number field.
 
If you need further assistance to set up your form, just let me know and I’ll gladly help!