How do you keep my son from sharing his real name with friends in Minecraft?

It's in settings to change your name or dont use your name

Hi, thank you for your response! Which settings? In Minecraft or accounts.xbox.com?

Hi Danny,

if I have my real name and surname in "How you look" but "block sharing my real name with friends", will it still show what is written in "How you look" (which in this case
is also my real name) or will not show anything apart from my gametag?

What I am trying to understand is if when you block sharing your real name it actually stops sharing what's written in the "How you look" tab, or if stops sharing your "real
name" (known from somewhere else in my registration).

Thanks

Hi again, so I was having a think about this because recently my Xbox has been asking me to setup real name sharing which I keep refusing. I can't remember seeing my real name in the account sign-in menu which made think that what if you disabled sharing,
assuming you have it on?

Disable real name sharing

You can turn off name sharing at any time from Settings:

1.Go to the Home screen.

2.Press the Menu button on your controller.

3.Select Settings.

4.Go to Privacy & online safety.

5.Select Custom.

6.Scroll right to the desired setting:

◦Share my real name

◦Share my real name with friends of friends

Have you played with the above settings? Maybe give that a go, above information from here:

support.xbox.com/.../real-name-sharing

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today Uplift

You should be able to show your real name on Xbox following the steps below:

“Turn on the Real name option to select which friends you want to see your real name:
Press the Xbox button  to open the guide.
Select Profile & system > Settings > General > Online safety & family.
Select Privacy & online safety > Xbox privacy > View details & customize.
Select Profile, and then scroll right to Real name.
Select the setting you want from the dropdown menu.
Note Your current display name can be seen under How you look.”

Source:
https://support.xbox.com/help/friends-social-ac...