Broadcasting
If you need to communicate with people standing close to speakers, you can broadcast audio to them. When you select a camera view in live mode, the system also selects the corresponding speaker, letting you broadcast the audio through it.
The Audio pane and Level meter display the broadcast volume. If the volume level is low, move closer to the microphone, and check the microphone connection and setup if you don't see the volume level.
Depending on your XProtect VMS product, your system might be able to record the outgoing audio. If a microphone is near a speaker, it might pick up and record the broadcast.