Enable Post or Event expiration

The Post Expiration allows you to set a date and time on which your post will automatically be deleted or undergo some other action.

Click on Enable Post Expiration, then select a date and time when the post should expire

You will see a menu of choices what to do when the date and time are reached
Option to replace the category – select the new category the post should have after expiration
Further options concerning categories for expired posts.