# Adding a program to a channel's schedule
<a name="channel-assembly-programs"></a>

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.

**Topics**
+ [Creating a program within a channel schedule using the MediaTailor console](channel-assembly-adding-programs.md)
+ [Defining audience cohorts and alternate content with Program Rules](working-with-program-rules.md)
+ [Generating audience-specific manifests](generating-audience-specific-manifests.md)