Having read the thread from the beginning and taking a quick look at the last chart posted here are some of my thoughts.
First box on the left (Friday): appears as though bottom is determined by low with most common wicks and the high with the same approach. This becomes the “box” to be used for the upcoming week. On the last screen shot all boxes appear to be the same size.
Establishing the “anchor”: Initially It appears that the box would be placed on a 2 or 4 candle reversal pattern (perhaps defined by @schizo301501) high or low as seen on Monday, April 2.
However, on Tuesday and Wednesday, as @A1lenTrader points out, The first boxes don’t seem to follow this anchoring protocol at all.
I am sure that I am stating the obvious - (It helps me keep things straight in my head ) It seems like it’s an iteration of an ATR strategy with a fair amount of discretion for entries; exiting a specific TP level.