Tap The settings icon in the lower-right corner of the window > Device use.
Select your child’s device.
Tap Type of control and select the preferred limitation type: Block device to block the device when the allowed use period ends. Only calls will be available when the device is blocked by the app. Text messages will not be available. Show warnings to child to warn the child each time the allowed use period ends.
Back in the Device use window, tap Time of use and then select Add days & hours.
Set the schedule or specify how many hours per day your child can use the device.
