Just to be clear there is no way to automate these parameters, at least in Cubase 14.

Whilst delays and reverbs have a mix function, lots of FX do not.
So this makes it impossible for example to apply parallel saturation to drums and modify the amount from verse to chorus.
It is crucial for a mix plugin to have automation and I feel this is a sore oversight here.
I really love MIXBOX but this issue makes it unusable for me in many situations and I wish this is solved !
Been asking for a year, could I have a reply from the mods please??