Mackie controller and selected channel

Hello, how to know which channel is registered as “the selected channel” in the mackie protocol in cubase ?

I have a 200 tracks template, and I have no idea which channels the 8 knobs of my komplete kontrol m32 are controlling


You can see the white line in the track list (on the right side from the tracks color) and the same white line in the MixConsole.