A Segment allow you to centrally manage content intended to be broadcast across multiple channels. Once you've configured your segments, you can add them to the Default lineup of one or more channels. You can also schedule your segments in your channels.
Adding a Segment to Default Lineup
In the Configure tab, click Channels under Channels and TV in the left nav. Alternatively, click the Channels and TV tile and then Channels tile.
Click on the Channel(s) where you wish to see your Segment.
In the left-most column, click into the Available Segments subtab.
Drag the applicable segment(s) and drop it into your Default lineup.
You may unlink your segment if you do not wish to automatically pickup changes to the original segment.