Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
This policy disables two family safety related features in the browser. This will hide the Family page inside Settings and navigation to edge://settings/family will be blocked. The family settings page describes what features are available with family groups with Microsoft Family Safety. Learn more about Family Safety here: (https://go.microsoft.com/fwlink/?linkid=2098432). Starting in Microsoft Edge 90, this policy also disables Kids Mode, a kid friendly browsing mode with custom themes and allow list browsing that requires the device password to exit. Learn more about Kids Mode here: (https://go.microsoft.com/fwlink/?linkid=2146910) If you enable this policy or don't configure it, the family page in Settings will be shown and Kids Mode will be available. If you disable this policy, the family page will not be shown, and Kids Mode will be hidden.