After you setup a demo account, test proof a winning strategy, you can let that the system to trade for you automatically.
Make sure Expert Advisor is running ( green color )
Then select the strategy you want to use, right click and Attach to a chart.
Click on Live Trading ( on a practice account )
Make sure the parameters are as what you wanted
Sit back and just watch the system trade for you.
How this demo is setup in 15 minutes
and how much it has earned me in the past 12 hours even without me working on it.