Question about opening a lister in dual mode

DO 10.0.0.4.4185.x86
Windows 7-32 bit

In dual display mode with dual trees, I have drive icons on both sides (over each lister). I would like to be able to click a drive icon, say, over the right display and have it open the right display list without having to click the right pane first. Same concept for the left display. Hope this makes sense. Maybe I've overlooked the obvious.

Thanks.

See this thread: Drive buttons

(I'm sure there was a more recent one but that's the one I found first, and it looks like it's still valid.)