1st - What game?

2nd - you don't broadcast movement as a general rule. Movement broadcasting is generally only done in short bursts where the movement doesn't need to be accurate, such as strafing out of the way of something. Almost all slave movement is handled by follow commands within the game.

Likewise, targeting is done in the game itself via macros - usually a form of /assist or macro conditionals. Almost all of multiboxing is done via broadcasting keybinds.