Here’s what a mini demo is in case you’re curious – https://youtu.be/KcgLvo77LkQ – this is the great Mix 3 from Joranalogue. It’s 3 channels mixing and VCAs with a 4th input that passes through with no level adjustment and there’s also a final level adjusting VCA which here I’m using for sidechaining.

https://jouranalogue/products/mix-3