MT4 setting to automaticaly close only half lots?

 
When I place a trade with 0.2 lots and then can close it with only 0.1 lot and leave the rest in game. Now I'm doing it manually. Is there any way to set it up like buy stop or sell stop etc. So I don;t have to monitor the trade all the time?
 
You can send pending opposite order with half volume and then close both orders.