Renter/Driver must:
Yes, the extra drivers have to be added to your contract. This can be requested:
The additional driver must meet the rental requirements and be the holder of a valid driver’s license which he must present before renting the car.
Upon receipt of the car, a guarantee amount will be committed on the driver’s credit card, which will be refunded at the end of the rental, if no other charges arise. The release of the amount can take up to 10 days depending on the issuing bank of the card. The warranty amount varies by car category.