My family member is on this membership account also, how can she/he receive the card?

For iPhones:

Navigate to the back of the card (click the small "i" on the front) and use the “Share Pass” button to send the card to your secondary member.

For Androids:

When using the Google Pay wallet, you will need to forward the initial email to the other individuals on your membership so they can save to their Google Pay wallet.