The red dot conventionally marks the hyperfocal distance where the long end of the depth of focus will just extend to infinity. It's the setting for the maximum amount of in-focus content in landscape photography. This sounds like your description (putting the red dot among the distances close to infinity). It doesn't match your images (putting the red mark (which I cannot actually see) opposite to the distances, offset from the usual mark indicating which distance is selected).
The images (where it is totally unclear what your arrows are supposed to point at) would rather indicate where to read off distances for infrared. Infrared light has considerably longer wavelengths than visible light. While this would in theory be offset by the measures correcting chromatic aberration, they cannot really extend all that much. The glass of the lenses slows down infrared like other wavelengths but results in quite less of a phase difference, so infrared is refracted by smaller angles. For the same distance, you need to exercise more of the collecting power of the lens, so whatever distance is opposite to the "infrared" mark is larger than the distance opposite to the "visual light" mark.