monitor station V2/central station crossover frequency for Sub

Any central station users here with a sub? I just purchased the new monitor station and I just realized if I run both my monitors and sub through it, how do I control my crossover frequency? Since nothing would be going into the sub I only see this being able to be controlled from the monitor device and not the sub

Cant speak to the central station, but the monitor station does not have a crossover.

Monitor station V2? So it just plays full range and adds the sub?

Yes. The reference to hooking up a sub is referencing button functionality. It lets you leave the c speaker constantly selected and bounce between a and b.