Theres this plugin for CS that is basically admins_manager but simplified. However, it puts the permissions on steam ID and I tried playing around with it change to it to IP but to no avail (I dont know how to program) it gives "Client with that name or userid not found" in the server console but for some reason with authid (steamid) it works perfectly fine. If someone knows how to make this IP please let me know! thank you!
Code link:
https://pastebin.com/ZAdaL7br