Controlling another plugin apvts

Hi everyone !

I would like to try and make a plug-in that takes control of another plug-in, but offering a new interface for exploration purposes.
I’m looking for directions, I know a bit of juce but I got no idea of how I could access another plug-in apvts.
Would it be host dependent ?
May an encapsulator be more easy to do (a plug-in loading another plug-in in itself) ?

Have a nice day !