Fomyak

Hi all I am making a mod for the first time and need advice on creating a mod event I did not find instructions for creating a mod event, perhaps this is unacceptable, The game contains events, such as a helicopter, or a story event, which are created when exploring the game world. My idea is that it would be cool to create a mission event, and around the event a zombie respawn I would like to take the Survivors mod as a basis, for non-player characters