If you want to reduce the volume of your open position, simply open an opposite unlocked position (in the “Make deal” window uncheck “Lock”) with a smaller volume.
You have opened Buy position on EURUSD pair with 10.000 volume.
It can be reduced by an unlocked Sell position on EURUSD of a smaller volume.
Your initial 10.000 volume has been reduced to 8.000.
Checking the Account Balance
You can see your account balance in the “Trade” tab of the “Terminal” window.
Trading history can be seen by clicking on the “Account History” (“History” for MetaTrader 5) tab in the same window.
You can also customize the history timeframes and get reports by right clicking on any line in your “Account History” tab (“History”).