Before you start:
When you’re in a Family Sharing group, you can share Apple subscriptions and eligible App Store subscriptions with other family members.
If your Family Sharing group has purchase sharing turned on, any subscriptions shared with the group are billed directly to the organizer’s Apple ID account.
Go to Settings app on your iOS device > [your name] > Subscriptions.
Do either of the following:
Share all new subscriptions: Turn on Share New Subscriptions. When you purchase a new subscription that’s eligible for sharing, it’s shared with your family members by default.
Change the settings of a specific subscription: Tap a subscription, then turn Share with Family on or off.
If you don’t see Share with Family, the subscription is not eligible for sharing.
To see which subscriptions you’re already sharing, go to Settings > [your name] > Family Sharing.