CQ20B Sentds to FX Unit

Hi,

As I see you can select SENDS TO FX Unit X in the FX screen. In this sub screen you will find rotaries for Input 1…16 / ST IN / USB / BT.
I think ST2 is forgotten in this screen?

And why is there a additional “Levels” knob to adjust the pre-fader output? I will always leave it on 0 dB…

Regards,
Pascal