It is not possible fdor ProOrder to close trades opened/modified manually.

You can certainly close automatic trades opened at anytime, after N bars or at a specif TIME (and DATE, eventually) or when a price is hit.

Since all strategies are executed when a bar closes, you may need to use the MTF support to use a lower TF to be more accurate.

If your strategy runs on a 4-hour or Daily TF you can use a 1-minute TF to close/update that trade.

edit: Vonasi is superfast!!!