How to change your age when you have family
I would like to know how to change your age when you have family and you are younger than the owner
Question marked as
Read this support article about how to update the birth date associated with an Apple ID: Update the birth date associated with your Apple ID - Apple Support
There's different ways to change the age on an account depending upon the age of the person, their target age, and the country's age definition of "child".