First navigate to the Manage Slideshows by any of these methods:
Click on the Manage Slideshows link in the Quick Links portion of the Dashboard
Click on the Manage Slideshows menu item in the Slideshows dropdown menu
Click on the Slideshows button
To unpublish a slideshow:
Click on the UnPublish link in the row of the slideshow you would like to unpublish
Click Yes on the confirmation dialog box, or click no if you don't want to unpublish the slideshow
Getting Started
Creating & Publishing Content
Administration