Putting it on screens

How do I get content onto a screen?

Add it to a playlist, then publish that playlist to the screen. See Creating a playlist and adding tracks and Put a playlist on your screens (publishing).

How do I show different things at different times?

Give content start and end dates, or repeating on/off cycles. See Show content only between certain dates.

Can I show the same thing on many screens?

Yes — publish one playlist to all of them at once, or group your screens so you can send to a whole group in one go. See Put a playlist on your screens (publishing).