Backtesting on PI application

I am trying to backtest few strategies on PI Backtest facility. For that I need, 15 minute candle High and Low price, but the tradescript is providing only day end High and Low commands.

Can someone help me how to fetch 15minute candle High and Low prices on Zerodha PI software?

Here is the method
Chart

Thanks Kamal for responding!! Can you let me know how to select a specific candle like 9:15 candle or 2pm?

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