you can make use of your auto channels… I made a ghetto diagram I hope it makes sense.
>synth 1
m >synth 2
i >synth 3
midi keybord> OT auto ch 10 > d >synth 4
midi ch 10 i >synth 5
b >synth 6
o >MnM auto ch 7 >synth 9
x >MD auto ch 8
have your OT midi tracks sequence synth 1-6 then keep track 7-8 empty. you’ll use those tracks as a passage for your midi keyboard to control the MnM and MD when the corresponding tracks are selected. the MnM can sequence synth 9. This set up gives you 8 internal OT tracks 6 OT midi tracks
6 internal MnM tracks plus 6 midi and the MD. All assessable by the master keyboard. make sure to turn off the internal channels of the MnM ad MD only auto channels are assigned. 