If I understand your question correctly what you need is to add restrictions to the pages you want edit restrictions. To do this select the Tools(gear) then select restrictions and add the users or groups this page is restricted to. Child pages should inherit the restriction. If you want different restriction on the child page you can add them.
Refer to Page Restrictions
...ollected feedback from users around the lack of shortcuts, and we’re here to address that: In next-gen projects, I miss the keyboard shortcuts badly. This is particularly true on the Board, but also i...
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