When you create a template, it is assumed to be for an hour. You can change this as from previous postings from another person. So you can add any element Photo, Web, Movie, and so forth and dictate each one when to start and how long for. In fact you can create a template for 8 hours and have different layers with different content coming up and disappearing to your liking. In that way you can only address the monitor(s) only once. In can send you a couple of JPGs to show you how this is done.
Regards
Bill