is it possible to access HSO-Patches on different MIDI-Channels via one MIDI-Track only, f.e. by using something like channel change message (if such exists), that is to instruct a MIDI-Track to send its data to different channels (f.e. to channel 1 for violins legato, to channel 2 for violins pizzicato)?
do you mean List Editor? (There is a Channel-Column there, but I can’t see any in the Key Editor)
No, Key Editor. The Info Line may be hidden, or it’s rather probably hidden by default for some reason. There is a button in the Toolbar which when you hover the mouse over it shows “Set up Window Layout[!]”. Use that one to activate the Status Line and the Info Line. I’m not sure why they are hidden as they should be helpful for … everybody … always?