[Q] How to lock the setting menu Only? just like the store demo?

Sorry for posting this because I googled and it came up with lots of unrelated answer.

How to lock the setting screen on Android? I wanted to lock my parents phone so they don't disable their sims card and complain they can't call anyone...
Like in the store demo, you can play with the phone without password but it requires password to use setting screen

I prefer without extra apps.

Thank you

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