Stop Orders aim at closing positions at off-market prices. These orders will execute when market value of an Instrument reaches the Stop price set by the trader.
Using your BlackBerry track wheel navigate towards the trading account / position you would like to view, from the list available in the Positions Screen
Press the track wheel and choose Select from the side menu

You will be redirected to the Position View screen of the Position you have chosen.
Press the track wheel once again and select Stop Order function from the side menu.

You will be rerouted to the Stop Order screen where it is required to provide pricing details.
There are several displayed fields:
Trade: Position ID number and Instrument
Base: Account Base Currency
Lot: Number of lots / mini lots
Your Rate: Your new price has to be lower than the current price
Required Rate Field: Trader enters his/her Rate in this field
Using the track wheel scroll to the very bottom field and enter the numbers you think fit best ( In this case your Stop price must to be less than 234.32)
Once required field is filled in press the track wheel and choose OK
STOP ORDER SCREEN

Once confirmed you will be redirected to the Position View screen for the position you have just worked with
Scroll down to the Stop field where you should be able to see the Stop Order you have just placed for this particular position