That is something from way back in the day when #D fighting was big on IMVU... the only way to do so is fast fingers and to do that is to click on the avatar for which you are targeting and pull up the actions box...drag it to the far right of your screen so that it permanently remains open... then just click on one action and then the next and you can continue to do this over and over no matter if they move from the orginal spot they are without you having to move or to relocate them..
hopes this helps