Set up Screen Time for a family member on iPhone
Screen Time lets you see how family members are using their devices, so you can structure the time they spend on them. You can set up Screen Time for a family member on their device or, if you’ve set up Family Sharing, you can set up Screen Time for a family member through Family Sharing on your device. See Set up Screen Time for family members on iPhone and the Apple Support article Family Sharing and Apple ID for your child.
Set downtime and app limits on a family member’s device
On your family member’s device, go to Settings
> Screen Time.Tap Turn On Screen Time, tap Continue, then tap “This is My Child’s iPhone.”
To schedule downtime for your family member (time away from the screen), enter the start and end times, then tap Set Downtime.
To set limits for categories of apps you want to manage for your family member (for example, Games or Social Networking), select the categories.
To see all the categories, tap Show All Categories.
Tap Set, enter an amount of time, then tap Set App Limit.
Tap Continue, then enter a Screen Time passcode for managing your family member’s Screen Time settings.
Choose which apps to allow at all times on a family member’s device
You can set which apps you want your family member to be able to use at any time.
On your family member’s device, go to Settings > Screen Time.
Tap Always Allowed, then tap
or 
to add or remove an app from the list.Note: If your family member needs health or accessibility apps, make sure they’re in the Allowed Apps list. If Messages isn’t always allowed, your family member may not be able to send or receive messages (including to emergency numbers and contacts) during downtime or after the app limit has expired.
Set content and privacy restrictions on a family member’s device
You can help ensure that the content on your family member’s device is age appropriate by limiting the explicitness ratings in Content & Privacy Restrictions.
On your family member’s device, go to Settings
> Screen Time.Tap Content & Privacy Restrictions, then turn on Content & Privacy Restrictions.
Choose specific content and privacy options, then tap
.
Add or change Screen Time settings for a family member later
To add or change Screen Time settings for a family member later, follow the steps described in Set up Screen Time for yourself.
Important: If you set up Screen Time for a family member on their device (not through Family Sharing), and you forget the Screen Time passcode, you need to erase iPhone before restoring from an iCloud or a computer backup. (See Restore all content to iPhone from a backup.) However, if you set up Screen Time for a family member on your device through Family Sharing and you forget your Screen Time passcode, you can reset it on your device using your device passcode, Touch ID, or Face ID.