Join family member to Apple music plan from PC.
I have Apple music family plan on my iTunes on PC, I want to add my child to this family subscription, but I don't have Apple device to join him to my family. Can you help me to do this?
You can do it with a Mac:
Add family members to a Family Sharing group on Mac - Apple Support
(or other Apple device) but I don't believe you can do it with a PC.