Yes, it is possible to add additional users to a GM MasterCard account. Generally, cardholders have the option to request additional cards for authorized users. These additional users can earn rewards that contribute to the primary cardholder's account. Typically, the primary account holder will have the responsibility of managing the account and monitoring spending. The process to add an authorized user may vary, but it often involves submitting the individual's personal information.
The primary cardholder may find the necessary information on how to add additional users on the GM MasterCard website, where the latest details and steps can be found. It is important to review the specific terms and conditions related to adding users, as they may differ based on the card issuer’s policies.