When you first create a driver, you are able to either assign them to an existing vehicle, or create a new one.

The article will outline how to change this vehicle at a later date.

Under the ‘Manage’ then ‘Vehicle’ tabs you are able to add a vehicle.

Once you have done this, you should use the 'Edit Vehicle' button on individual drivers to change which vehicle is assigned to them.

Open the 'Assign a vehicle' form, delete the previous vehicle and then you can search to find the new one.