<<< We're talking about starting with a Real Style. >>>

Yes.


<<< There is no checkbox to sub a midi drum part for a RD as part of a Real Style. >>>


Yes there is. Rt click and select 'Force Drums Track to MIDI drums'
The track color turns to yellow and the Instrument to 1 standard drum kit.
On my system, at this point the sound generated is a bass guitar sound.

To get drums to play, I have to assign a Plug in

I select Plug Ins and Select Coyote WT
Hit Generate and Play and I have drums playing.


The issue then becomes if I'm not satisfied with that drum style pattern, opening the drop down menu and select 'Select a Custom Midi style for this track' (current track drums), selecting a style or preset from this menu does not change the drum pattern.


BIAB Ultra Pak+ 2024:RB 2024, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.