Finished an event you don't need for a while, or have a test event you no longer want to see? You can archive or delete those events. Then, if you need the event later, you can unarchive it.
From the event settings, scroll to the bottom of the page, where you'll have an option to archive the event or delete the day/session.
Select Archive Event to hide the event from the list.
To get back to that event to delete or unarchive it, go the the Events page and select Show x archived events then choose the event form the Archived Events list.
Delete the Event
In most cases, archiving an event is all you need. It'll save all of the past history of check-ins but won't show up on the Stations screen or in any reports. However, if you do need to delete an event, go to the archived event settings to permanently delete it.
Verify you'd like to permanently delete the event as well as all the history on every person in that event.
You actually have to verify this twice because once it's gone, any information from that event cannot be recovered.
Once the event is deleted, it will not show up in any person's history, in any reports, and the event will not be accessible on any page.