djd_oz
2
You do not need to assign a MIDI channel to the MD if you only need transport.
I’m not familiar with the Juno, however if you set it to say MIDI Channel 1 and on the OT, you could set the Auto Channel to 1 also, then you could use it as a MIDI keyboard for whichever track you have selected. However, you will have to connect this to the MIDI in of the OT.
For the Shruthi and Morpho you could set it to any other MIDI Channel (e.g. 2 and 3 respectively)