You can Attach a Stop Loss order when you create an opening combo order in TWS.
In the Mosaic Order Entry window, click on the Advanced button and select Attach Stop Loss/Profit Tacker/Bracket. Place a check next to Stop Loss, enter the order parameters and submit.
In Classic TWS, right-click on the order line, select Attach, and then select the desired order type under Stop Loss. Define the order parameters and transmit.
More information on the Order Entry window and the order management line can be found in our Users' Guide.