Adding a program to a channel's schedule
Each program contains a VOD source or a live source that's part of a source location in your account. You add your programs to your channel's schedule to control the order that they play in your channel's stream.
A program that contains a VOD source can be configured with one or more ad breaks. Each ad break contains a slate, which is a VOD source from a source location. To create the ad break, you add the slate at an offset in milliseconds into the program.