The Hue-Chroma filter is another way to modify saturation. Clear explanations about chroma and saturation can be found at https://ninedegreesbelow.com/photography/changing-saturation-using-lch-chroma.html .
«Presets» are a common feature for several Colors commands. You can find its description in Розділ 8.1.1, «Colors Common Features».
The slider and the small arrow buttons allow you to select a hue in the color wheel (-180°, 180°).
«Chroma» is the purity of the color. Moving this slider makes colors more or less pure.
This slider and the small arrow buttons allow you to select a value (luminosity): -100, 100.
These are common features described in Розділ 8.1.1, «Colors Common Features».