For validation of Harmonic Pattern. We have a weird way of clubbing few things into Moving Average to spot out pivot levels. This will work better than normal RSI in Indian Markets due to its manipulative nature. It also shows up speculative volume buildups.
You can select three things here. The best will be if you leave it at default settings.
25 indicates overbought. 75 indicates oversold.
But, as it has the impact from the volume of the stock apart from prices, it can not be named as a lagging nor a leading indicator.
Use it for divergence testing and as an additional method for confirming Potential Reverse Zones (PRZs)