As an admin or content owner, you want to set an expiration date for content assignments so that they can be reassigned via an automated rule when no longer considered valid. This is especially useful for compliance content that needs to be completed every year, for example.
Go to the content item you want to set an expiration date for.
Open the context menu (button with three dots) and select Edit.
Go to Completion.
For tracks, the Completion settings are on the Details & Settings page.
Turn on Time to expiration and set the number of days until expiration.
Save your changes.
When you assign the content to someone, the expiration date is automatically set based on the number of days you defined. You can change the expiration date during the assignment process or you can override the expiration date after assignment.
Due date v. expiration date
Completion settings include a Time to complete (which determines the default due date) and a Time to expiration (which determines how long an assignment is considered valid). Due dates apply to when someone should complete a content assignment and expiration dates are when content can be reassigned.
You can always manually reassign content to someone who has dropped, completed, or been exempted from an assignment, but rules can only reassign content automatically once its assignments reach their expiration date.