This is how it works. Everyone starts with a flag and a secret objective. there are three secret objectives, so two teams will get the same objective. There is also a neutral flag on top of the town hall building.
Having one flag allows your medic to revive troops. Having two flags, or your objective complete and one flag Summons your non-reviveable mercenary hero. Having three flags, or two flags and your objective complete makes your team invincible.
This hows overviews and team startpoints. I'll be PMing the players their goals and team info later.