Regarding indicators:
I think it’s worth to firstly point to a key difference between range candles and candlesticks: By definition, range candles don’t take time into consideration when charting, they only account for price. Range candles distort your timeframe (horizontal axis) in order to aggregate data in candles of the same range (H-L).
Most of the commonly used indicators are designed with a linear time progression in mind. This implies that their purpose may not stand when you change such a fundamental property on the underlying data, and therefore they could not make any sense when you use Range Candles.
Hence, my assumption is that PRT does not build those configurations because, by design, they don’t make sense.
Having said that, if you are confident about its value or you want to move this forward, range candles can have moving averages and highest/lowest values, so “technically” you can build them. I don’t know if possible with PRT without more investigation, but you may be able to code those indicators yourself. I would only suggest doing this if you are really proficient with understanding what you are doing: this is the trading version of Inception, so you might very soon lose track of how to reasonably interpret the indicators.
Regarding Heikin-Ashi:
Very similar reasoning to the above. Heikin-Ashi charts depart from price chart values as they are variation of price interpretation. However, if you could code the above indicators, you can code those too.
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