Use it when
A form has a hard limit.
Good fit for registrations, RSVP caps, class signup limits, and forms that should close after capacity.
Use this when a form should stop after a total response cap, deadline, or capacity rule. Test it on a copied form before using it on a live signup.
Good fit for registrations, RSVP caps, class signup limits, and forms that should close after capacity.
If the form is low volume, watch the response count and turn off Accepting responses yourself.
Set the limit, save the closed-form message, submit a test response, then check the public form.
Use a copied form and a tiny limit before applying the rule to production traffic.