With Zapier's automated workflows, users can automatically invite people to an existing Google Calendar event whenever trigger events happen in other apps, eliminating the need for manual additions. This integration allows users to connect their Google Forms with Google Calendar, creating a seamless workflow that automates attendee additions. By following the steps outlined in this guide, users can create a Zap that adds new form submissions to a specific Google Calendar event, sending invites to attendees' inboxes.