How to do multi-pick-point color selection in the Advanced Color Editor of Capture One?

The blog posting How to do radical color changes in your images for Capture One uses a technique where multiple colours are picked to make big hue adjustments. It has the following image:

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Notice how multiple pick points are shown at the same time. I’m not sure what I’m looking at here because I can’t make Capture One do the same thing. Are these multiple, separate color picks where the pick points should “work together”, or are they separate and the image has just been photoshopped to make multiple picks evident? When I try to do this in Capture One 11, I end up with multiple picks where the pick points and surrounding area are displayed separately.