Add custom domain email to Childs account
I had Family Sharing and children accounts for a couple of years now.
I just noticed I can use a custom email domain and set that up. During the process it says you can add new emails to it later (the domain has been parked and did not have any emails set up).
Now that I have it all set up I want to add custom emails for each of my children accounts.
HOW?????????? Holy difficult there is no obvious way to do it.