This article will show you how to use Bulk Actions for Calendar Events.
Who can use this feature?
System Administrator | Owner | Publisher
Instructions
Navigate to Modules and on the Content tab, click Calendar

Select the Calendar with the events you want to modify

Select which Events to apply a bulk action to

Select All: To select all events, click the checkbox next to the calendar title. You can then click the Select All Rows on this Calendar button to select all the calendar events.

Open Bulk Actions at the top

Click a Bulk Action option

Publish: Publish draft events
Unpublish: Unpublish events to draft status
Delete: Remove events, you must Unpublish an event before you can delete it.
Decline: Decline events submitted for approval
Archive: Move events to the archive