There is a way where you can partially achieve this.
If you have a buy that you want to scale out of, you can set a pending order for a sell ie a sell limit order at your TP.
Then you can close both the buy and the sell at your leisure when you return to your computer. I would suggest you find a broker that supports 'Order Close By' which will allow you to close the hedge with no commission or spread costs which is the same as having closed the order in the first place.
In terms of the move to break even, look for a good trade manager EA that can achieve the functions you seek. Forex Factory will probably have something like that.
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