I was using multiple keybinds for each death grip maybe that's why the example round robin wasn't working.
Anyways, @Uaala:
Make your Death Grip mapped key, send your Warcraft keybind for Death Grip to your DK ATG.
But check the box to round-robin, within target group.
That means it will do one toon and then another, and then another.
Not all of them at once.
I made a action target group and put my DK characters in there. And then I made a death grip keymap that is the same keybind for death grip in game. The whole "send your Warcraft keybind for Death Grip to your DK ATG" part is confusing. There's no option to send a keymap to a target group unless I'm missing something.
EDIT: I think I got it. I made a keymap called "Death Grip" that has no hotkey. Under Step 1 I made a "Keystroke Action" and put my death grip key (the same on all dks) and selected "Group (all of): DeathKnightIWT" and then checked round-robin within target group. Is this correct?
Also, I got the DnD to work, I may have to try that in round robin. And all my DKs are blood right now because I rolled on a new server and have no money, mains, etc to do different glyphs, etc. Does ISBoxer work well for professions lol.
EDIT TWO: I followed exactly what Uaala said to do and the whole round robin thing going to the next toon's death grip didn't work. And when I did get the death and decay to actually fire off after placing it on one toon only it then said spell not ready yet.
Here's my config file. I'm talking about the DKS group.
http://www.privatepaste.com/d3cddd6c07EDIT THREE: At this point the way I'm getting into melee is running forward on my tank, and then backing up with the mob so the melee get in range because they literally stop JUST outside of melee range for heart strike, etc, etc. Then I have to hit Alt-F to follow again or else they just sit there when I run off. I've found out they were sitting there after like 2 pulls when I realized, these aren't dying fast, then noticed my group way back somewhere.
EDIT FOUR: I got my melee to move and attack, but after the target is dead they all run off into the abyss and I don't want to be hitting follow again after. Or will jamba addon solve that for me and I just need to use it? Also, why are my melee running in circles while spamming IWT?