HI,
Could you bring more information about the Holy Grail Wizard.
In your ebook, you explain to use the sliders ( offset and rotate) to bring the orange curve close to the horizontal line.
Is that mandatory in any case ?,
or can we play with this line in order to change the global trend of the sequence ( from bright to darker for instance )
Thank you
Regards
Dominique

It's not mandatory, but I find it's easier to bring those curves to the middle and then do the progression in brightness when editing the keyframes in Lightroom. This will give you much more control, because there you see what you are doing.

Thank you very much Gwegner for this information
I will proceed as you suggest,
best regards
Dominique