Add to position or partial close of position should work in all volumes starting from smallest. e.g. adding or closing 10k in 1m position.

currently if you want to add 10k in a 100k position or you want to close 100k out of 1m position its not possible.
it can by achieved by keeping the "Selected volume" and resulting "close/add RED button" the same, in modify position popup window.
so if I select 1k in volume the resulting RED BUTTON should "add or close 1K not a different figure.
This will eliminate the need to open multiple positions and it will gives a fantastic opportunity to keeping adding or partially closing a position with flexibility of any volume.
ctrader slows down with multiple open positions and perhaps it will improve its performance as result.