How to place a buy GTT One Cancels the Other in (OCO) order type?

When using OCO orders in GTT, you’ll need to set both Stop Loss and Target for the stock. If the trade hits the Stop Loss first, the SL order will be executed, and the Target order will be automatically canceled. Conversely, if the stock hits its target first, the Target order will be executed, and the Stop Loss order will be canceled.

Make sure to carefully check the order box and set your target and stop loss accordingly.