How to become an Admin Operation: Harsh Doorstop
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To become an admin you first need your SteamID64.
You can get your ID in Steam in the details for your account ( Steam -> Settings -> Account -> View Account Details ).
Or on pages such as https://steamid.io .
In Basic Mode you enter your SteamID64 under Server Settings -> Admin Settings.
In Advanced Mode you enter your SteamID64 in the Admins.cfg.
Please enter only one ID per line!