How to tell if family member has access to Apple TV+?

Hi there,

I’ve just activated my free one year subscription to Apple TV+. I have invited a family member to Family Sharing and they’ve accepted and I can see that they’re now part of Family Sharing.

However, when they go to their Apple TV app (on their Mac) it gives them the option to start a free 7-day trial, suggesting that they don’t have access to Apple TV+. How do we tell if they do have access? And if they don’t, how do they get access to my subscription?

Thank you in advance!