The P, A, and B hotknobs can be used for multi parameter morphing. I think the H90 exp ped does this too but I don’t use it.
Direct your Morningstar expression pedal to one of those and keep it that way. I use P hotknob.
In the H90 you assign any number of parameters per program/preset to whichever one of those hotknobs you linked to your Morningstar exp ped.
Done.
Your morningstar exp ped will do whatever hotknob morphing you build into each H90 program/preset.
