You can control your broadcasts via the Options menu:
Play: Set a broadcast to playing mode. You must set your broadcast to play after creating and saving it.
Pause: Pause the broadcast.
Proof of play report: Download a summary of the media playback and results for the content types in the broadcast. This is only available if Share of Voice is activated in your account.
Edit: Open the broadcast for editing.
Delete: Delete the broadcast if you no longer need it.
Duplicate: Create a copy of an existing broadcast. The broadcast is automatically set to pause.