There is a bug if you use multiple Lumetri effects, you can only edit the last one!!! Huge Bug!!!
David Bret Egen commented
It's an oversight, frustrating but manageable by moving Lumetris around in Effect Controls. Not the greatest solution, but in a pinch it works.
Would be great to be able to double-click an existing Lumetri effect in Effects Controls and know that's the one you're affecting in Lumetri Color Panel.
Thanks for posting.
you can only edit ON THE LUMETRI PANEL!!! the last one, but you can edit in the effect panel individual