How do you install Zombie mod in Counter Strike 16

Well it is like a patch you cant really install it you have to have your own server and you can set it up to be a zombie mod best is to search for Zombie mod servers all of their maps start with zm_... name of map. So thats how you know its a zombie mod server but if you dont have a server that you run your self you cant set it up. And no you cant do it with bots.