How do I make both characters melee attack

I am doing 2 enhancement shams, how do I make a melee attack macro?

some vague macro with

Code:

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/cast [harm] Stormstrike

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and / or

Code:

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/startattack

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should help..

Here's a good starting video from Vyndree. Should help
http://www.wemultibox.com/content/ge...ed-multiboxing

or have this macro in the same spot/key bind as your main toon

/assist (main name)
/cast attack