How do I add a child to family sharing ?
How do I add a child to family sharing setting up a new iPhone and requesting family share to add child without Apple ID
Question marked as
To add someone to an iCloud Family, they need to have an Apple ID account.
For information on setting up an Apple ID refer to this article:
Create an Apple ID for your child - Apple Support
For information on setting up and adding someone to an iCloud Family you should take a look at this article:
Set up Family Sharing - Apple Support