You can try just putting in part markers but that is pretty limited. It depends on how keen you are, have a look here:
RealDrums Solos you can drag the realdrum m4a/aif files from the drum style folder /Applications/Band-in-a-Box/Drums into Audacity or other DAW if you have one.
Here is a Bar Label plugin for Audacity to give you Bars n Beats bmp-labels.ny go to Generate Menu > BPM Labels set start bar to -1 put the original drum track in the top and add a new stereo track, copy section from the top track and paste in the new drum solo track, using the Time Shift Tool to arrange them where you like.