1.First select the “Parental Control” icon located on the bottom right of the home screen.
2. Next, select the “Web Supervision” box, you now can go through your devices and see your logged web activity. From here you can click on a website located in the log to either block it or block the whole category. You can even select “Blocked Websites” to type in a website manually and block it.
I think these guys with atompark dot com can help you, they work in this sphere more than 15 years, it’s my personal advice for you, visit their atompark homepage and choose what you need.