Change search term to any key word or phrase that signals a meeting or even in which you don't want your phone going off. Still vibrates.
If
Event from search starts
This Trigger fires a set number of minutes before the starting time of an event on your Calendar that contains a specific keyword or phrase in the event’s Title, Description, or Location. Ingredient will be based on the zone set in Google.
Then
Mute ringtone
This action will mute your Android device's ringtone. If your device is already muted, it will remain muted.
Explore more great ways to automate Android Device and Google Calendar