Recovering childrens' Apple ID or iCloud passwords
I created Apple ID accounts (with associated iCloud email addresses) for my children to manage their activities using the "Family" feature, and have individual local accounts set up for them on my laptops.
I now want to enable email and iCloud for them so that they can share contacts etc across my laptops. Email was never configured for them afaicr and I'm not sure what pw was originally selected for their Apple ID. Any attempt to try to recover or reset their password seems to include Apple sending email to their email address, which would require knowing their password to login and access. Other attempts using the defaults suggested by the recovery process get interpreted as a request to reset my own password which of course I do not want.
I would have thought that registering my young children as, uh, young children would have allowed the admin (me) to reset their Apple info like passwords.
How do I recover or reset my childrens' Apple ID or iCloud passwords or otherwise enable features for their use? TIA
MacBook Pro 13″, macOS 15.7