I've been starting to make use of Lightroom CC for the catalogue, and was looking at it's face recognition stuff.

Now, I have all these "named people", but the face LR has picked as the display for each named person is not usually the best one, and often one of the worst images. How do I specify which image LR uses for the Named Person?

Before my recent win10 forced reinstall, I was using picasa where you could easily specify which photo to use as the display image for a person. I'm just looking for a similar function within LR