Dismiss Calendar notification popups more easily
This is a really good question - I am bothered by the same issue.  I Googled, and found this exact topic, posted here about 6 years ago.
Can macOS have a keyboard shortcut to dismiss notifications?
There's a pretty good discussion about this, and I downloaded the &quot;Alfred&quot; workflow solution since I own the app.  The alfred-notification-dismisser by zakyum on GitHub is located here.