Here is a quick run down on how to do it
load 1 zombie on a map
Right click on your zombie and add "appear-enemy-team2.fpi" to the appear section in the properties of your zombie
Now just under that you will see "Main" add "main-weapon.fpi" to that
Now your zombie is setup moving on to ally
load 1 ally on your map
same steps as above but instead of appear-enemy* you will use appear-ally-team1
Now your zombie and ally will fight simple no? all these files can be found in the following folder "FPS Creator\Files\scriptbank\Dark AI"
======================================
My software never has bugs. It just develops random features.