Replacing the preamp, Darkglass tone capsule + 4 controls.

Hey.

I want to replace the preamp in my bass with the darkglass tone capsule.
My bass comes with 3 slots for potentiometers and the darkglass has volume, bass, mid and high mid controls.

Is it possible to wire it so that the mids are using a stacked knob?
And if so, what kind of potentiometer are we talking about?

Any info would be appreciated.
The bass in question is a warwick thumb.

Thank you.