I'm not sure what you mean by this. Do you mean set the PQR enable hotkey to something that isn't used by WoW or IS Boxer? I'll give that a try.
-- Tried it. Still not working. The keys are broadcasting, I can see it spamming "no target" on the other screen. PQR is just not recognizing the hotkey when it's sent via IS Boxer.
So frustrating.