You got MIDI grooves triggering samples, which you need the MIDI Editor for....or you can use pure audio loop samples.
I've used both, and I find that MIDI grooves are much easier to work with to get complete drum tracks exactly how you want them, and EZ or SD drummer apps make it even simpler.
You gotta put a little time in learning how to work with the MIDI Drum Editors and grooves. You start off with some basic canned grooves and then build on them, adjust them...etc.
If you're writing a groove beat-by-beat....that's a drag.