There are several ways to place a trade. You can do so through the Market Watch window by double-clicking on your desired market (Forex, commodities, etc.) and an order window will appear in front of you. In the order window, choose the size of the position and whether to apply a Stop Loss or Take Profit level. The order window has also an in-built trading calculator that informs you how placing a trade will affect you in terms of spread in pips and monetary value, commission, pip value, daily swap points, among others. Simply select the volume you want to trade and the preferred direction — buy or sell.
What is more, you can place a trade through the buy and sell buttons found on the chart itself.