Post the actual full name of the mod you're using. Saying "i think it was called multibox" doesn't inspire much confidence.

What does "when I reset it" mean? Is that an option inside the mod or what? Where is the message displayed?

Your post lacks sufficient detail for anybody to even stab at fixing it.

As for "any tips on doing Shamans", well this site is pretty much Shaman multibox central so use the following links:

How to ask a question

Guides

Software tools forum

Forum search facility

Better, but off-site search facility

Wiki

In there, you'll find a "complete Shaman macro set" (thats a hint...) that should get you starting in the right direction.