Is the family organizer the only one allowed to buy the apps that are to be shared?
If a family member (not the family organizer) purchases an app, can that app be shared with all the family members?
MacBook Pro 13″, 10.13
Question marked as
Yes.
See:
Share App Store, iTunes Store, and Apple Books purchases with Family Sharing - Apple Support
When purchase sharing is turned on for your family, you can see and download items from each family member's purchase history