Add user to apple card

Please review the support article below on adding Participants (Authorized Users) to your Apple Card Mastercard account. There is a section on what they can and can’t do with their account.

It’s important that each device be updated, before starting, to the latest iOS version their device supports. Turn off any VPN and the Participant must be in the US to accept the invitation.

Set up Apple Card Family and add a co-owner and participants - Apple Support