The GARCH indicator with the timeframe selection option available in the input parameters:
input ENUM_TIMEFRAMES TimeFrame=PERIOD_H4;Β Β Β Β Β Β Β Β // Indicator chart period (timeframe)
The indicator requires GARCH.mq5 indicator file. Place it in <terminal_data_folder>\MQL5\Indicators.
Fig. 1. The GARCH_HTF indicator