From your dashboard, search for the order you want to assign trucks to.

Click onto the green Add Driver button in the order information section.

Click the "From Location" drop down menu to see a list of locations you can assign trucks from.

Select the location you want to assign a truck from.

Click the "Select" drop down menu to see a list of trucks associated with that location.

Select the Truck ID associated with the truck you want to assign.

Click the "Select" drop down menu to assign a driver to this truck.
(trucks can be locked to drivers or have multiple drivers)

Click the driver you want to assign to the truck. 

Click the lower "From Location" drop down menu again to select the location to deploy your second truck from. 

Select the location you wish to deploy your second truck from. 

Click the "Truck" drop down menu to view the list of trucks that can be assigned to this order.. 

Click on the Truck ID for the second truck you want to assign to an order. 

Click the "Select" drop down menu in the driver field to see a list of drivers you can assign to the second truck.

Select the driver you want to assign to the second truck.

Click "Save" to finalize truck assignments.

How to Assign Trucks From Multiple Plants To An Order