Indicator XXDPO_Candle_Alerts with the timeframe selection option in its input parameters:

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

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

Fig. 1. Indicator XXDPO_Candle_Alerts_HTF