Photos face recognition: how to delete wrong face

[JerTheGeek]

So I'm testing out iOS 10 and I'm pretty impressed with the face recognition feature. It looks like it's working pretty well.
However, I accidentally merged two faces and now I need to separate those groups of photos. How do I tell photos that a face is not that person?

 

[GreyOS]

Go to select mode and press the Share button bottom left

It has actions for you like Not This Person

 

[JerTheGeek]

Go to select mode and press the Share button bottom left

It has actions for you like Not This Person

Haha right after I posted this thread I looked at the share button and found it. Thanks!
[doublepost=1465996816][/doublepost]Also, if I have iCloud Photo Library on, shouldn't it sync the faces across my iphone and iPad? I got it all perfect on my iPad but it hasn't updated to reflect the same on my iPhone? Just a beta thing or will it actually not sync?