This is found in security just below the Account PIN controls and once turned on disables all chat functionality in the game and limits the games that they can play to only those that Roblox has ...

Anyone who has been intentionally or unintentionally blocked from a Roblox account can be unblocked in just a few easy steps.

Parents will be able to see how much time is spent on Roblox and set a daily screen time limit that can’t be exceeded.

Finally, Roblox is introducing accounts with parent privileges. The current system is tied to parent’s email accounts and allow them to set a PIN and get notifications.