How do I adjust the audio of the see-u board, both the loudspeaker and microphone volume of the see-u board?

How do I adjust the audio of the see-u board, both the loudspeaker and microphone volume of the see-u board?

By means of the 2 blue potentiometers on the back of the outdoor panel itself we can adjust.

Both the volume of the outdoor panel speaker and the microphone of the outdoor panel.