When mixing multi-track drums sometimes the source files for overheads or ambient mics arrive as individual mono tracks and you prefer to mix with these as stereo for a simplified console view or easier processing with plugins. Or you might want to do the opposite - split a stereo audio event to separate left and right channels.

I explain how it works in this video:

https://youtu.be/yacClJNx9fc

It has been ages since I created new Studio One content! Let me know what you think.