Mini-mod attached to this post.
I didn't know what they should do...so they don't do anything. You need to add the two characters to your party. One is a pre-generated NPC, one is a player generated PC. Both have spells from multiple Spell Schools. Why a PC? Essentially the same thing as a pre-gen NPC, but more importantly, the PC has a class with 4 baseclasses, which NPCs cannot do.