Configuring your Child’s Screen Time through iCloud
Screen Time lets you know how much time you and your kids spend on apps, websites, and more. This way, you can make more informed decisions about how you use your devices, and set limits if you’d like to.
After you have set up Family Sharing (See your set-by-step guide to this), you can remotely manage your child’s device using their iCloud account.
To start, log in using your child’s iCloud account on the device you want to manage.
Turn on Screen Time
Go to Settings > Screen Time.
Tap Turn On Screen Time.
Select This is My [device] or This is My Child’s [device].