To close a position, click on the “Close Position” button on the main screen or in the “Open Positions” tab. Once you have clicked this button, a pop-up box will appear and you will need to confirm or cancel your request to close the position. In this pop-up box, you also have the option to partially close your position. For example, if you have a position on Natural Gas of 2000 contracts, you can choose to close 1000 contracts and to be left with a smaller position.