First, you edit the properties of the human, or whatever, that you wish to make oblivious to your prescence. Add a
metaproperty>AI_Behaviors>AI_bm_2>FrontGateGuard. This helps in making it non-hostile. Now add AI>State>Current alertness,
and hit enter. Then, add AI>Ability Settings>Combat:Non-Hostile, and change to always. As a measure of security, you can
add AI>Attributes>Vision and Hearing, and change both to null. There are probably better ways to make them non-hostile,
but that's all I know.