based on the advice given by people on here, i have managed to solve 1 & 3, and i think using Elon's method i have almost solved 2, so far:
A)picking up the item, targets & displays a message
B)which should if im understanding it right target the multi-manager?
C)then passing through the door way activates another trigger that displays another message, and targets the multi manager?
D) with both of these targeting the multi-manager, it then kills all the monster called "a", and targets the monster makers called "b"
E) spawns a monster, there is 1 monster maker for each of the monsters killed with the previous kill selection
however im not sure if im understanding this multi-manager right, and also i am still not able to get the monstermakers to spawn the new monsters, the current configeration for them is:
name: b
monster type: monster_zombie
childrens name: <blank>
No monsters: 1
frequency: 1
max alive: 1
flags: start on <ticked>
cyclic <ticked>
monster clip <ticked>
can any one see any obvious problems?