Ok so this may be obvious to some but not all, so thought I'd contribute.
Once you've enabled this module, type "[deceitbraziers spawn" to spawn them and "[deceitbrazierrs despawn" to despawn them (without the quotes).
The braziers being spawned are located at 5175 615 0 on either facet. Walk into Deceit and turn left at the first doorway.
Usage: Double clicking the brazier will cause a big fire effect plus one random monster to appear (once every 15 min?). At least that's how it was on production. http://www.uoguide.com/Deceit
Hope this helps someone.