I posted in help about this and looked around abit to see if I was missing something, but it looks like the anti-camp policy is pretty much an On or Off type of thing...
Anyway so my suggestion is for the ability to modify the anti-camp settings so it's possible to set a custom time - maybe with a text box or two? (I say two because 1 for the time a person can be idle before a warning message about their idle time shows up, and then another that says they've been idle for too long and that they will be diconnected in however many seconds.)
-JelloMan