Ableton Live has a limitation regarding the MIDI outputs of a VST plug-in: it can only go to a single channel, making MIDI plug-in such as Scaler a bit limited, as you can only trigger a single instrument, since all voices are mixed.
You can however use the PatchWork plug-in to overcome this limitation. Check this out!
In this video tutorial, Joshua Casper shows you how to use Patchwork VST plugin from Blue Cat Audio to get multiple MIDI channel outputs from InstaComposer in Ableton Live. This process will be the same for any VST plugin that can do multi-MIDI channel outputs.
