Apple Pay can be used anywhere that accepts contactless payments and it is not Multibanco exclusive: on transports and in shops, restaurants and cafes around the world.
To pay just touch the TPA with your device and validate the transaction using biometric data or your device PIN.
Some TPA might request a card PIN. To complete the payment you must associate a PIN to your virtual card in the app. Go to |Settings|, |Cards|, choose your virtual card and follow the steps to define a PIN.
You can also use Apple Pay in inapp payments and websites.