[Imp]

Why does it have to be a meeting? Set to assault & play with battle points till get balance you want.
Of course easier is to make the scenerio in the editor. Make the next one then go to campaign & import & thats your first 2 battles done. Now just keep building more.
Depending on how you set core only need to buy deploy other side unless you want fixed support units.
Read the manuel for more specific info