Creating new Google account to bypass norton

How to stopping new Google account to bypass norton.

Detailed description:
My child creates new Google accounts in chrome, and then can get onto any website he wants. New profile, no family safety.

How to stop this??

Product & version number: Norton family 7.9.5.8

OS details: windows

What is the error message you are seeing? N/a

If you have any supporting screenshots, please add them: