It is simple you just assign the TF341_Appear_Team6 script to the zombie apocalypse zombies and then MP 53 characters will attack them. Also if you want to use MP 57 zombies be sure to assign the hideshadow=1 command, so your appear script will look like this
;//TF-341 Artificial Intelligence Script
desc = default DAI appear for TF-341
;------------------------------------------------------------------------------------------------------------------------------------------------------
;//Local var setup here so as not to be reset when toggling between main and shoot scripts
;//Shotdamage protocol
:state=0:dimlocalvar=beenshot,setvar=beenshot 0
;//local var flags independent mode or fire-team assignment: FT0=Independent,FT1=Alpha Team,FT2=Bravo Team,FT3=Charlie Team,FT4=Delta Team
:state=0:dimlocalvar=FT,setvar=FT 0
;//NPC interact codes: 0=waiting,1=ready,2=active,3=NA,4=reset
:state=0:dimlocalvar=interact,setvar=interact 0
;//Set Entity Angle Y-axis
:state=0:dimlocalvar=SEAY
;//Team Factions
;//Team 1 (Player team)
:state=0:aiaddenemy=1 2|5|6,aiaddneutral=1 3,aiaddally=1 4
;//Team 2 (Enemy team)
:state=0:aiaddenemy=2 1|4|6,aiaddneutral=2 3,aiaddally=2 5
;//Team 3 (Neutral team)
:state=0:aiaddenemy=2 6,aiaddneutral=3 1|2|4|5
;//Team 4 (Player Friendly team)
:state=0:aiaddenemy=4 2|5|6,aiaddneutral=1 3,aiaddally=4 1
;//Team 5 (Enemy Friendly team)
:state=0:aiaddenemy=5 1|4|6,aiaddneutral=2 3,aiaddally=5 2
;//Team 6 (Zombie team)
:state=0:aiaddenemy=6 1|2|3|4|5
;------------------------------------------------------------------------------------------------------------------------------------------------------
;//Start & Team Settings
:state=0:hideshadow=1,setalphafade=100,addaiteam=6,state=1
:state=1:runfpidefault=1,state=2
;//End
But do it only if you are using the MP 57 models
