i wonder, can i sent output from 1 instrument to 3 or 4 different tracks using 1 midi channel with 3.0 ?
for example, i made keyzones drums + sampled synth sound, can i play them at once? everything i got ovverlapping sounds or my drums mute synth sounds 
I would suggest to split the synth part to another instrument by copying the instrument and stripping out the drums.
Then assign your midi device to both instruments (midi input tab) and assign each instrument to their own track.
You can still use the same key range to play both sample groups, but then they play in the track that you want them to play (and also will record in the track they need to be recorded!)