Hi, I would like to spawn as many as possible we have a small group of friends on a private server. How do I make as many as possible spawn.

Well technically there isn't a limit, if you wanted to, you could make it spawn 10,000 zombies. However, the server is unlikely to be able to handle that many so the limiting factor is the server. The number of zombies that the server can run without crashing or slowing down varies per server so it isn't possible to have a set maximum possible zombie spawns.

Hi
Sorry for not making my question clear. I meant to ask what do I have to write in the code to increase the number of zombies, I don't understand code very much.

You don't need to edit the code at all. You can find the config file in the oxide/config folder.