Under the option Private People living person

KWH2-SM3

Is there a way to notify the person who created the living not deceased private person to be notified if sources or duplicate information have been attached to the private person who is noted as living no deceased?

Alan E. Brown

Anyone can use the Follow feature to be notified of changes to a person profile in Family Tree.

So for your particular question, it would be up to the person who created the living private person in the Family Group Tree to decide if they would like to follow that living person. If they do, they will be notified of any changes made to that person.

See How do I follow or unfollow a person in FamilySearch?