Hi,
As you already noticed, moving into Default Controller gives you access to the Midi Config.
You can then modify the midi mapping as you want, and it will be saved as a preference. On the next start with Minilab MKII connected, you will have the overloaded config you have just set.
You can also use the following command: Pressing Shift + Turning the up leftmost knob will change the Volume.
This gives you the ability to use your controller as you want.
BTW, I thank you for your feedback on this topic:
after running several Users Tests, we have decided to hide the Midi Config option when using an Arturia Controller to improve the ease of use and the lisibility of Analog Lab 3.
We will continue to perform more users tests to find the best option.
PL