I think he is confusing multiboxing with having more than one client open at a time
you can be running 2 characters and switch back and forth to control them separately, but you can't use a program to have each character cast the same spell that the one you are running does, or otherwise do things based on a macro, script or program to control extra characters.
For Example Tyrath CheeZ #9 planting green thorns for regs. 8 clients open no scripts running cycling through the 8 clients manually planting green thorns in the dirt patch. 4 necro horde minions picking up the regs as they naturally do and dumping them in the house box as the minions hit their weight limit, manually. Everything is done manually except the minions which by normal use of the game mechanics picks up every piece of junk they walk by. Each necro manually takes their minion to dump the load in the comod box a few steps away. No scripts, no auto anything, just good old fashioned CheeZ.