Drum track dimension pro

Plenty of options I suppose..

Is the dim pro sound a drum kit ? or a one key sound patch that triggers a rhythm ?

If it's a drum kit, you can probably add fills using the existing kit sound.

If it's a one key trigger sound, you can add Session Drums, for the fills elsewhere.

Perhaps the third option (that I don't have experience doing) is sample the grooves, and do some additional layers to it.