Go into the Stock Record and view the order.
On the order select the RFL tab.
Click the RFL button and the following window will appear:-
Choosing a Road fund licence shows the Band, CO2 range, Basic price, FRF and total. The CO2 level of the vehicle is pre-filled (or can be manually entered) and the table is filtered to only show appropriate lines. There is also a tick box to define whether to add FRF or not (this is automatically ticked for new vehicles)