Here's my guide:
http://www.dual-boxing.com/threads/3765 ... -ManifestoAnytime you initiate melee combat, or movement (including turning and strafing), that breaks follow.
I'd personally put "IWT Follow Me" on an easy to use keybind (I use a mouse thumb button).
But you can also use the "Strobe" feature of Jamba, which auto initiates "Follow" every second or so, outside of combat.
For quests...
Have Click to Move enabled.
Have a hotkey for Interact With Target.
Target the quest NPC.
Have the slaves assist your main.
Press your IWT keybind.
That opens the quest window.
If you have Jamba, any option you pick with the main, the slaves will mimic.
You can set various options for quest rewards.
If they're all the same class & spec, having everyone take the same reward makes sense.
But you won't want that option, if you're running a mixed group with say a cloth user and a plate user or two.
You can also use the Mouse Repeater, with IS Boxer to do this.
I'd generally turn off Repeater, before switching to another toon.
By default you have Key Repeater and Mouse Repeater, as a single toggle with both on or both off.
In general, use Key Maps on and Repeater off, for most of your boxing.
And only disable Key Maps when you need to (single window chat or entering your passwords).
And only enable Repeater when you need to (everyone /cheer, or entering passwords).