Currently on Mac, the only way I can prioritize a single resource from a series is to right-click on it and select "Prioritize this book" which will send it all the way to the bottom of my prioritization list. I've previously been able to hold down a key and drag over to place a single resource in the exact location I want, but it seems I can no longer do that. It's possible the last time I tried it was on my Windows installation, so I'm not sure if I've ever seen this work successfully since I hopped over to my Mac.
I've tried just about every combination (and individual use) of Shift, Ctrl, Option, and Cmd + drag, but none of them seem to work. Anyone know the secret handshake or can confirm this is broke?