Instrument tracks can have multiple outputs (= multiple channels in Cubase’ mixer). What you can route there is set by the design of the instrument.
If you want to send different midi events on different channels to a VSTi the instrument track is limited in this regard I think. Works only with ‘rack instruments’.
To get things differentiated:
An instrument track allows you to see the acutal midi events that feed the instrument loaded. It is like a ‘normal’ audio channel - with inserts and sends etc. just with midi events on it instead of waveforms.
A rack instrument has audio outputs as well (of course…), they are just found somewhere else in your project window/mixer. It can receive midi inputs (on different midi channels if you like) from several midi tracks.
But hey, neither do I own Halion nor is midi a big part of my actual work, there are true midi professors here on the forum which might chime in
Working with midi channels and multitimbral used for one instance of Halion5 loaded for all 64 channels seems to be better for the CPU ?
The less Halions you load the less CPU you need I’d say…
But for the midi channels i do need a audio fx channel setup ?
…and how about pre/post fader ?.. I try to follow a tutorial in Logic made where the orchestral setup has reverb assigned to all the instruments and with the switch… pre/postfader there is a placement of the instruments possible ( in front or back )
Pretty sure you already know how it works - ‘post’ sends level in dependency from the channels fader, ‘pre’ works independent from the fader. That’s it all, it doesn’t work magic in terms of placement per se, but pre/post settings of course are one valid method to accomplish placement tasks if you build your mix accordingly.