lol I so hope this still works for 3.1...downloading it now ^^ (yes, it's the 3.1 'half-time marathon' lol)

It's in how you are doing the actions. There is a modifier key for each target type.

Example: Frostbolt. Keybind shift for focus target, alt for target of target, ctrl for mouseover. Target a_random_mob01 and focus a_random_mob02 with critter_rat under your cursor. press frostbolt key alone, target gets it. Press shift+frostbolt, a_random_mob02 eats it. Press CTRL+Frostbolt, and the critter eats it. Or, now, you target your tank in group, and ALT+Frostbolt to hit whatever he's targetting.

Hope this explains it a bit better for you.

This is really nice. I can't tell you how often I get frustrated casting on target and wanted to cast on focus. Thanks so much!!!

I dont understand this addon, I cant make it work or something. After installing this and setting up keybinds in the game, I was curious as to the functionality of this addon i assumed that you can change the target of the spell your trying to cast at that point, so i went and gave it a shot. *begins casting frostbolt on the taget then while its going changing targets and pushing the hotkey... Nothing. A few more attempts with the different hotkeys, still nothing.... Can someone please be a little more presise on the function of this addon or if im doing somthing wrong. Thanks