Controlling camera calibration via preset amount slider

Hey there,

since I often use the Camera Calibration Panel in Lightroom Classic for stylistic purpose I saved presets for frequently used slider combinations as presets. Different images need different amounts of tweaking the primaries. So I currently try to take advantage of the possibility to use the Preset Amount Slider to avoid the mess of having multiple versions of the presets with varying intensities. I found the 'Support Amount Slider' checkbox in the Create Preset panel to be grayed out if I only tick the calibration checkbox to be included in the preset.

Are the camera calibration sliders not meant to be adjusted via the amount slider because their actual purpose is to compensate for color shifts in certain cameras? Or is there something else that I am missing?

Thank you very much!