How to: Send a Pre-recorded Message (Training) Currently there is only 1 Audio Zone at Menzies Creek. Due to this zone control for the announcement is not required.  Firstly you can choose to delay in the announcement with the " select pre-message delay " field. You can then select a message that you would like to broadcast in the " S elect Messages " panel. Once the message is selected " S tart Messages " is then selected to start the broadcast. if you need to adjust the volume you can use the Message slider under Audio Levels