Question

A virtual midi-splitter at StudioOne's input to tracks?

Answer 1

Here is an example of a MIDI Splitter: https://www.sweetwater.com/store/detail/MIDIthru8

We also encourage you to create a thread about this question on the Presonus user forum. https://forums.presonus.com/viewforum.php?f=108. This will allow for back and forth discussions about an issue or question and more points of view as to possible different approaches or workflows.