Just to bring you two on the same page:-
DRUM REMIX:- Replace Midi Drums with AUDIO Drums within Midifiles. You can also do this with Styles (under STYLE VIEW or Pattern EDIT).
DRUM MIX:- Modify individual Midi Drum instruments (Kick, Snare, Hi Hat, Percussions ...etc) used in styles or Midifiles. You can also pan, modify effects, mute ...etc individual parts here or create new Midi drum maps!
Dusan - For Latin1, Latin2 and Latin3, these are groups of instruments and not just individual instruments ... so for an example in the Merengue Style, LATIN1 will control the Congas (1 or 2) so whatever you do to LATIN1 affects both/all Congas - unlike with the Snare and Kick and HI Hat which are exclussively assigned to those instruments!
Hope this answers your question.
Thanks,
AJ