Vehicles are listed on the Assignments panel. Drivers may be assigned to a vehicle that is in the Available or Planned group.
Select one or more tours. Click the three-dot icon at the top of the Assignments panel and then Auto-assign Driver to add drivers. They are filled randomly from the available drivers.
Click the arrow on the vehicle and choose from all available drivers. Drivers that are already assigned to a vehicle or tour cannot be added. You may assign a driver before or after creating a tour, but there must be a driver prior to dispatching a tour.