One. The first alt/clone/whatever doesn't stack right on top. He/she will ALWAYS be behind you. Try to jump, see how the second lags. All has to do with the pings between the computers AND the pings between the realm server.

[align=center]*****Second. Read. The. WIKI.***** [/align]

Keyclone does a great job keeping up the software and his presence on the forums. However, at least ATTEMPT to find an answer prior to throwing out a bunch of gibberish.

If you don't know macros, get to know them. If your second mage is off by just a bit and you're tabbing to target, you're gonna be pulling multiple mobs. Learn the "/assist toon1 name" macro.