need help with dual-boxing different classes in same group

[Alge]

There are three main strategies I am aware of, given here in order of increasing difficulty of setup:

1) Place abilities with similar effects/casting times/cooldowns on the same place on your action bars on different characters and just use some mechanism to send you key presses to all characters.
2) Use a "two step" macro (see the stickies in the Macros and Addons forum) to incorporate most of your abilities into a single spammable button. Use other buttons for abilities not included in your spam button.
3) (If you are using ISBoxer) Use Lax's HOWTO: Configure ISBoxer Like a Pro. A generalised, abstracted version of a combination of the above two methods but with all setup done in software (ISBoxer).