As a meeting host, you can remove a meeting from your calendar when the meeting isn’t necessary and you want to let the meeting participants know that the meeting is canceled.
You can cancel a meeting that you've scheduled from the Webex app.
Go to Meetings .
Find the meeting in your calendar.
Double-click the meeting, click Delete the meeting, and then confirm that you want to delete the meeting.
The participants are sent a meeting cancellation and the meeting is removed from your calendar.