The Volatility2Step_Alerts with the timeframe selection option available in its input parameters:

input ENUM_TIMEFRAMES TimeFrame=PERIOD_H4; // Indicator chart period (timeframe)

For the indicator to operate, the Volatility2Step_Alerts.ex5 indicator should be added to the <terminal_data_directory>\MQL5\Indicators folder.

Fig. 1. Volatility2Step_Alerts_HTF indicator