Whether you're using MT4 or MT5, you can manage and settle a portion of your open position by following these steps:

For MT4:

1. Double-click on the position you wish to manage in the "Trading" tab located within the "Terminal" window.
2. In the order window, confirm that the order type is set to "Market order."
3. Specify the volume you want to close in the "Volume" field.
4. Double-check the message in the yellow box, which should state "Close #OrderID side volume pair by Market."
5. Click on the confirmation message.

For MT5:

1. Double-click on the position you want to manage in the "Trading" tab within the "Terminal" window.
2. In the order window, ensure the order type is set to "Market order."
3. Specify the volume you want to close in the "Volume" field.
4. Double-check the message in the yellow box, confirming "Close #OrderID side volume pair by Market."
5. Click on the confirmation message.