How do I set up a Multi midi setup for live stage performanc

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I use a HP pc w/ Windows 10.
I Have Cubase 5, M-AUDIO Keystation midi controller, Casio CDP-100 Keyboard and Halion Sonic 2 VST Instr.
How to set up the Controler and Casio to play different midi channels Thru Cubase 5 using the Halion Vst Intr.?