PS4 systems have default parental control settings that determine what games, videos, and features are available to offline user profiles on your PS4 system. Offline users are user profiles that don't have an account on PlayStation Network.

You may also be interested in PS4 Family Management features, which include parental controls for both online and offline users. These settings can also be adjusted separately for each of your children. https://www.youtube.com/watch"v=d3dfwcvcJPA&list=PL0KZUj34U60t0e6ENvxb3wq8GIyYtW3-a
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