Create iCloud account for child - forced email address...

Hi

Am about to bequeath a old iPhone to a child for their bus commutes.

The child is not yet 13. I have tried creating their iCloud account via the

iPhone setup process *and* creating the account from Family Sharing on

my iPhone. Both processes required me to create a child account because

of the child's age.

In both cases, the account id is *forced* to be of the form XYZ@icloud.com.

That is, I cannot create their ID to be their email address, which is what I have

done for my wife and other children (we all have the same personal domain name

for our email addresses).

Summary:

Creating an iCloud account for 12 yo child. ID is forced to be name@icloud.com

not the preferred name@familyname.com. Is that new? Any workarounds?

Thank you.