By default, the strategy works best on 1h timeframe. In theory, it should run well on any timeframe, but you will absolutely need to adjust the Hull Resolution. I recommend starting with 4x the current view (aka, if you are using 5m candles, set the resolution to 20min, which is 4 * 5m).
The settings are pretty self explanatory:
Start Month - Month of the year to begin backtest (automatically beings at 1st of month)
Risk Per Trade (%) - How much of your equity to risk on each trade.
Leverage - Amount of buying power/Margin you have available
Loss (pips) - Distance in pips from the entry to place Stop Loss
Profit (pips) - Distance in pips from entry to place target Take Profit
Trigger Trail (%) - Distance in percentage from entry to begin a trailing Stop Loss
Trail Dist. (pips) - Offset distance of trailing Stop Loss
Hull Res. (min) - Length of candle in minutes to use when calculating the HMA
Hull Period (bars) - Smoothing period for HMA