In most cases, Priority Pass membership does not happen automatically when you're approved for an eligible credit card — you'll typically have to activate it by enrolling through your card's online account or by calling the number on the back of your card. For example, with American Express cards like the Amex Platinum Card, you'll find an enrollment link under the "Benefits" tab in your account online. Each authorized user needs to enroll separately for their own Priority Pass membership as well.