The support forum is built with (1) a Q&A format for common trading queries received from wannabe and experienced traders, and (2) a standard forum for course video topics. How to Trade Price Action and How to Trade Forex Price Action videos are consolidated into common forums.
Use topic header to identify video number (and Main/Forex course as needed) you are referring to.
I think the red box is the low of the trading range, and buy at trading range low(green box), this is first buy. Then price going lower, so traders can scaling in, buy 2nd time after buy signal bar, when price going up to green line(1st entry price), traders can exit breakeven on 1st buy and profit on 2nd buy.