Three ATRSmoothed indicators from three different timeframes on one chart. For greater clarity, the indicator from the lower timeframe is displayed by a histogram, from the middle timeframe - by colored dots, from the higher timeframe - by bold lines.
This indicator requires the compiled indicator file ATRSmoothed.mq5. Place it in <terminal_data_folder>\MQL5\Indicators\.

Figure 1. The ATRSmoothed_3HTF indicator