Hauptwerk Virtual Pipe Organ

Just return from France with a brand new four manual Hoffrichter console and I don't know how to "auto-detect" each of the keyboards.
I connected E-MU Xmidi Out into Midi Out at the back of Keyboards (there's also Midi In and Thru) and I don't know what to do next? Hauptwerk doesn't see any channels anymore like I used to have with 3 x M Audio (each on different channel).
Please help.

Best,
Tom

Connecting the keyboard MIDI-out to the computer/synth MIDI-in usually works.

Thomas

Thank you.
I was able to fix the problem.