With Parental Control you can set limitations on WiFi access, as well as define specific users within your household.
1. Start by using the slider button at the top to enable Parental Control. Blue means it is enabled; gray means it is disabled.
2. From here you can click "Add more profile" to create new user profiles for your family members. You can also turn existing profiles on or off with the slider, or select the arrow at the bottom to edit controls you have already created.