Zur Vollständigkeit hier noch der FAQ-Auszug damit die Infos beisammen bleiben:
The Conditional Close option allows traders to set up a second, opposite order that is placed only when the primary order executes. The Conditional Close feature is useful for "automatically" closing an open spot position on margin at a targeted profit or loss.
However, the Conditional Close cannot be used to set both a profit target and stop loss target at the same time. In other words, it is not possible to place “Combined” or “One-Cancels-the-Other” type orders using a Conditional Close order.