color saturation, luminance color by color

Hello, how can I change the saturation of one color? For example less or more blue in the air? In lightroom you have sliders to change color by color. I can’t find how to do this, still learning how to use Rawtherapee. Here someof my first work with Rawtherapee https://flic.kr/s/aHsktGiogK and here some more difficult to find the exact colors (evening) https://photos.app.goo.gl/p2inCg8zpiRwtgHx1

Thanks in advance.

Hi @PhilippeVDD, a couple of links to get you started:

Thanks Alberto will try it :wink: