We simply set the key/tempo, enter our chords on the chord sheet to correspond to our arrangement, enter our RT/RD/MST selections (or per a style) and generate. We then enter blue/green part markers as appropriate.
Afterwards we move all the tracks to our DAW (Logic Pro X) as we are Mac folks and do not have access to Window’s RealBand. We will frequently regenerate select RT’s until they play what we like

and if that doesn’t happen we bring multiple regens of that RT into the DAW and cut/paste them into what we hope sounds good.
This may not be applicable to your planned work flow as there are so many ways to use this great program. Welcome to the community!
Bud