Folder Grouping on the Console inside Studio One is AWESOME !!!
David is providing a good tutorial on how to make use of that in his video.
On the last section of his video, he points to a downside to that approach. It is a downside currently, which is also a good room for improvement on Presonus side.
Based on his indication on the "downside" in the last section of the video (before the choir :) ), I would second that opinion and would like to request Studio One developers to group "folder" buses on the right side of the child tracks.
Users, do not leave me hanging... It will prove out to be neat. These small things make all the difference.