These users can access only the apps and content specified by the administrator using parental controls. Managed with parental controls is the best setting for kids or anyone else who needs a guiding hand when using the Mac. If you're in charge of the Mac and its accounts but don't want anyone else to be, create standard accounts for them. Standard user accounts are set up by the Mac administrator account, and can install apps and change settings, but can't add other users or change other users' settings.