Twin engine control - FSX model creation - tags

Can someone tell me how to setup a twin engine when using the Animation Manager within GMax. Maybe not the animation, but what is the right tag so that I can control each virtual engine separately. Is it possble that having a lever_throttle0 and lever_throttle1, that sonehow that FSX associates that with a virtual engine ? Also, how do you associate a propeller to a virtual engine ?