You can place a new order in the MT4 terminal by multiple ways:
Proceeding with any of the above options will open up the ‘Order’ window.
You will be able to modify the parameters according to your position you want to open. The ‘Symbol’ field allows you to change the instrument and the ‘Volume’ field allows you to set the size of the trade (lot). *1 Lot = 100,000 units for FX.
Click on ‘Buy’ to open a long position at the current ask price or ‘Sell’ to open a short position at the current bid price.
You can also set stop-loss and take-profit levels.