n00b question: take profit scaling in MT4?

I'm just curious if there's any way to close half a position automatically as a take-profit line in metatrader?

ie, allowing me to be away from my computer to auto close just half the position and automatically let the other half run (with a trailing stop).

thanks in advance....

oh nevermind, here's the answer:

Open separate orders each with 1/2 the volume you trade.