Limit each Google Forms option separately.
Google Forms can stop a whole form, but event and signup workflows often need each option to have its own quota. Use FormGuard for option-level limits and FormRanger when the option list comes from Sheets.
Recommended setup
Use Google Workspace add-ons for the boring operational layer, then test the live-facing form before sharing.
Make options represent capacity
Use dropdown, multiple-choice, or checkbox options for sessions, roles, time slots, or seats.
Set a quota per option
Give each option its own cap so one full option does not close the entire form.
Preview the public form
Submit test responses against tiny limits before sharing the real signup link.
Related guides
Use these if the workflow changes from synced choices to real capacity control.
FAQ
Can Google Forms limit each option natively?
Google Forms can limit total responses, but option-level quotas usually need an add-on or custom Apps Script.
Should I use FormRanger or FormGuard?
Use FormRanger when choices come from Sheets. Use FormGuard when those choices need capacity limits.
Can one full option stay closed while others remain open?
That is the goal of a choice-quota workflow: stop the full option without closing the whole form.