Adding an end date to a collection will allow the collection to be automatically removed from your catalog on a specific date.
To add an end date to a collection:
-Navigate to the Content tab and select Collections
-Click Edit on the collection that needs an end date
-On the publication tab, select Published or Scheduled
-Select an End Date and click Save to apply changes
-The collection will be automatically unpublished and removed from the catalog on the set End Date