Family Sharing - Photo Library Album

How to share a photo album with the family iCloud photo sharing?

I already subscribed to the additional iCloud storage (200GB) and I want some photo albums inside my iCloud photo library to be automatically shared with the family without duplicating the photos to the iCloud photo sharing, how to do that?

iCloud Photo Sharing does not use or require extra paid storage. Your photos are stored on space provided by Apple.

There is no way to automatically share photos. All shared albums, including the Family album, are manually managed, in that you drag or place photos in to them.