OK, Heres how I play it...
The CME 76 I have on the bottem is used only for a MIDI dumb keybed. I do NOT need to get to any of the controls. It has a split at C3.
Lower manual talks to T2 ( and now my PA2X) via MIDI and a requires some setup on the T2. Upper (right) side of the split is used to play voice upper 3. That way when I setup my performances I have Upper 1 and 2 on the normal T2 upper, lower can be played on either the lower CME 76 (left split) ot the left split of T2. This setup also allows me to have the split on the T2 very small area so I have more ROOM to play upper T2 sounds. Upper T2 sounds on upper sound 3 are played by just moving down to play the CME upper area. Very nice indeed.

One othe nice part... the lower chord area (CME) does not do MEMORY, but the upper left T2 does, so I just play either with chords when I want memory or not.

This is a very basic setup and can be expanded. There are many ways to also add a sound module to this setup and I have done that using my PC and EMU soft synth. With the Yamaha T2 you will need to select the sounds on the sound module outside of the T2, I use Live styler to do it Works super... But now with PA2X it supports full MIDI bank/program change right in the performances and I can setup performances to set ALL sounds the way I want them.

Anyways, If you guys & gals have the interest this can be done and works well. In fact one of the Yamaha demo guys a couple of years ago setup and demoed the Tyros Organ he called it...can't remember his name.

Oh, I also play 13 note pedals and it was easy to setup too. You do have to spend a little time setting it up. And you may need a good basic knowledge of MIDI... any MIDI book will get you what you need.

I started out wanting this because of two things.
1) I am a organ player and love the second manual for chords
2) I wanted more room on the 62 note upper to play ( a bigger RH split area) so as not to be so cramped and have that extra octive or so for some sounds that I wanted that range for.

In it's basic setup, you can make it work faster than you can explain it!

Lee