In the bottom right of HIRO, you can set your timezone, look at Regular vs. Extended trading hours, and view changes in price as a percentage or on a logarithmic scale.

Selecting Auto causes the chart to automatically scale as Price and the HIRO indicator move across different price ranges.

SpotGamma Alpha subscribers can exclusively access the SpotGamma HIRO Indicator inside the SpotGamma Dashboard here.

Additionally, here is a link to the SpotGamma HIRO User Guide.