You can use Auto MM=2% (low risk) up to 10% (high risk), according to the significance of your account and your risk and profit expectations.
Reasonable fixed Lot size is 0.05 on 1k account balance, or 0.5 lots on 10k account balance.
If you use multiple currency pairs, you should consider decreasing the risk accordingly.
Supported currency pairs: GBPUSD, EURUSD, USDCHF
The default settings are for GBPUSD. The robot can be used on other currency pairs, too. For other supported pairs and .set files, please check here.
You can run the EA on M1 or M15 chart – it makes no difference for the EA, as all used timeframes are hardcoded.
You can backtest and optimize the EA on M1 chart by “open price only” method – this will be correct enough and save you a lot of time.
Finally, please, bear in mind that Holy Grails in trading does not exist! Even the best system suffers some bad periods. BF Smart Scalp EA is using very reasonable SL levels, so they can get hit /even repeatedly/ in bad market condition. Please, do not leave negative comments after every SL hit, or losing trade!