Supervised Experience builds on the historic (and pretty poor) Restricted Mode, which is essentially a filter allowing users to block content which is deemed for adult users only. There are now 3 filtering levels which are:
- Explore – for users 9+.
- Explore More – for users 13+
- Most of YouTube – all content excluding content marked as 18+.
Importantly, parents manage these settings from their own device via Google Family Link.
There’s a really simple and helpful guide HERE which includes a walkthrough video (under “Supervised Accounts on YouTube – How do I Get Started?”.