Keyboard Control External Monitor Speakers using Keyboard
Before installing any of the below go to System Preferences > Security & Privacy > General > enable “App Store and identified developers”
Once you have done this proceed with watching the video to the end. Remember to Control+click on the installer files otherwise you’ll get errors.
READ THIS: After installing, for best results do the following… Using the button controls on your Monitor bring the volume up to about 80%. I do this so that when using the keyboard control I have a good range between max and min sound output.