if you reach your target... I tried setting an order to open against my trade but it never worked. Is there a way you can just set a target and get it to close the trade there?
In ig if you bring up a deal ticket there is an option there to enter a stop and limit when you open the trade.
Even if you put up a silly limit 500 pips away and then just amend it later. Won't alter your margin, only entry and stop affect margin, where you take profit has no bearing.