No, supplementary or additional BonusLink Cards are not available for family members or other individuals under the same account.
Each person should have their own BonusLink account registered with their own mobile number.
If your family member would like to enjoy BonusLink membership benefits and earn Points, they can create their own BonusLink account through the BonusLink App using their own mobile number.
Once their account is successfully created and verified, they can activate their membership and order a new physical BonusLink Card through the BonusLink App or BonusLink Web Portal.
Check out this article for next steps: Why can’t I link my existing BonusLink Card to my BonusLink app account?