All our car rental partners will only require the name of the main driver at the time of booking and the additional drivers will then be recorded at the time of Pickup.
Each car rental provider have different requirements concerning additional drivers, but in most cases the driver is asked to present their driving licence at the depot and sign the rental agreement.
The fee for additional drivers varies per car rental provider and can be viewed on the "Important Information" box during the booking process or the car rental provider's Terms and Conditions.