You can use the perl/qst syntax to automate the mob spawning and #attacking and whatnot.
I presume you could also, like someone mentioned, force opposing factions on the NPCs, then get them to run towards some point, causing the two armies to aggro each other, with no need to force them to attack.
It's something I plan to work on on my server, eventually. I'm still experimenting with the quests and spawns and whatnot to find the limitations of the software compared to my imagination
