Looking though the WhFB3 Rulebook I couldn't find any rules for deployment of your armies without a GM. Is it you take turns to deploy units then characters like later editions or is it like 40K where you deploy you whole army?
I always liked the map option myself. We used to do a little sketch each and disappear to another room and draw our units. We'd then swap papers and field the opponent's troops.
Map option is good ... The fog of war
Other option is the deployment with Movement skill. You place your slower unit in first and your oponent do the same. Unit by unit in Movement skill order and you finish by the faster units.
I place the heroes as leaders with their unit in the same time.
Bye Nico
Deployment is perhaps the most important phase, it is quite possible to loose and to a lesser extent win the game at this point. I always like to use advanced and trailing forces. This leads to a further tactical edge.