Hi John,
The way I use the Combo Slider is, get the overall mix sounding OK, slide until the loudest instrument reaches the correct level (as indicated on the "fixed Mixer")
Actually, I had no use for the old "floating mixer" other than that and still not sure what point it serves now.
Col


iMac, 3.7 GHz 6-Core Intel Core i5, BIAB MAC2024 (802), Audient iD4