If you have several videos in a single program, the videos play last-to-first by default, so your newest addition will be the first video to appear. If this works for you, use the embed code near the top of the Program Details display.

But maybe you want to highlight a particular video. 

To start playback with a particular video, go to the Video Details by clicking on the video title and use the embed code beside that particular video. The embed code in the Video Details includes an instruction to make that particular video the first in the program, no matter what else you add to the program.

This is especially useful if you have a feature film and are adding supplemental videos like trailers or press interviews. By using the embed code from the Video Details, your viewers will always see the film first, and the film will always appear at the top of the list of videos, even if you keep adding new videos to the collection.