Once you got screens added, you can start assigning, updating content it plays.
The steps below is for you to assign a playlist, but you can follow the same process to assign any assets or schedules.
To assign the playlist to your screen: Go to the Screen tab.
Click "Edit" button on the screen you want to change.
Click the Type drop down list and select Playlist.
Click the Selected Playlist drop-down and select the playlist you've created. In this case we select "Lobby TV Playlist"
That's all, the Screen will be updated.