Currently, I cannot find a way if there is one to select multiple channels in the sidebar channel list in the mix window. Yes, you can click one track and control+shift the last track in the actual channel fader area, or control+click, but you should also be able to do this in the smaller vertical channel/grouping window. If you have a large session, it is inconvenient to click then scroll through the fader area. Simply picking multiple tracks in the side bar window would be easier. Also, you cannot select all channels in the fader area of the mix window with control+A. This would be helpful at times as well.