You can cancel or delete an activity from the calendar. The difference is whether team members are notified.
Steps
In the platform, select Calendar from the menu.
Find the activity and click the three dots on its right.
Select Cancel activity or Delete activity.
Which one should I choose?
Cancel activity: members get a notification that the activity has been cancelled. Choose it when the activity won’t take place and you want everyone to know.
Delete activity: the activity is removed without sending any notification. Use it if you created it by mistake.