Mazda 3 2020 Owner's Manual page 453

The shape of the switches varies depending on the vehicle model.
No. Item
1
2
3
Commander knob (selection):
Rotate or slide the commander knob to highlight/select the on-screen
functions you want to use.
Commander knob (select):
Depress the commander knob to select the desired on-screen function
you want to use
Entertainment button:
The audio source screen last used is displayed.
(During Apple CarPlay or Android Auto™ music playback)
Displays the Apple CarPlay or Android Auto™ playback screen.
Mazda Connect
Explanation
Interior Features
5-19