How can I get Lightroom to re-analyze a photo or group of photos for people?

[dank87557784]

Sometimes a photo or series of photos have the wrong person assigned and I need to remove the person from the photo or group of photos.  Alternately Lightroom doesn't always pick up the faces of people on photos. How do I get LR to re-analyze a photo or group of photos?

[selondon]

You can Remove Photo From Person, using one of the ways described here:

https://helpx.adobe.com/lightroom-cc/using/people-view.html

Re-sorting apparently is meant to take 24 hours or less

[dank87557784]

I'm not sure you understood what the issue is.  For example, if there are two people (faces) in a photo that I would like to designate, but Lightroom has only determined that there is a single face, or lightroom has determined that the Person A is actually Person B and Person B is actually Person A in the photo.  I need to be able to tell LightRoom to re-analyze the photo.  The phtoto below only has one person identified, but clearly there are two faces.  How to I tell Lightroom to re-analyze this photo?