Norton Family account and domain account on PC

I have small home domain on Windows Server 2012 R2 Essential and 4 workstations with Windows 10 Pro x32/x64.

I'm using Norton Security with Backup and also Norton Family capability

I'm IT guy with lots of experience, but I did not get how to setup Norton Family with domain account. I read Forums, tried to find solution, but did not.

Please if someone can help me with. If this is impossible, I'll return my subscription and choose another vendor