HELP, Adding 3pos switches to 9XR PRO

[Sp1k3]

Just found this post but didnt quit find the answer Im looking for.
I have replaced my trainer switch, which I never use, with a 3-way switch.
Then I went to the hardware menu, and there it wasnt really clear what I should do.
So I would like to just leave the trainer switch unconnected (0). And connect it to a free input on the uC and with in the Hardware select which switch it should be. But there I only find options with LCDx, DACx and ELE? And I dont get it. On the ELE I have more options though...
What should I do?

[MikeB]

I've not allowed for replacing the trainer switch with a 3-pos switch, only ordinary 2-pos switches.
Is this the only switch you wish to convert to 3-pos?
If so, one way would be to wire the THR switch to where the TRN switch connected and then wire the new 3-pos switch to the THR switch and an extra input, DAC1 would be the easiest.

Mike

[Sp1k3]

Yeah, the TRN wasnt my first choice, but since it broke, and I only had 3-pos switches available, I already replaced it. So the question is where to connect it. So let me try what you suggested.
Many Thanks as always!