The electronic screen that has been installed in your organisation is being driven by a device called a Net-Top-Box (NTB). The NTB is able to display a variety of media types including:
The NTB is probably subscribed (tuned) to a media Channel that has been published on the Intranet or Internet and will access the Channel to update itself periodically. If the NTB is not subscribed to a Channel then the programme on the NTB is the Channel.
Make a note of the Channel that your NTB is subscribed to, who the Channel is published by and the contact details of the Channel Administrator.
The Administrator has probably programmed the Channel to show a standard set of media but may also have allowed you to customise most aspects of it. There are four categories of media: