Overbridge Side-chain only 3 inputs?

I’m setting up my overbridge with Analog Rytm and can only see 3 stereo side-chain inputs. The plugin shows that 8 mono inputs should be available.
I’m moving to Cubase 12 (actually Nuendo 12) from Protools and am trying to wrap my head around some of the obtuse routing in this DAW.
Please help!