You can configure LotAtc Server within the config.lua file. It is located in your %userprofile%/Saved Games/DCS/mods/services/lotatc/config.lua
tip. Use Notepad++ or Sublime Text to modify this file, DO NOT USE Notepad, it will corrupt the file
red_password = "red" , blue_password = "blue",
Set the passwords used by LotAtc client to connect to the server.
For more details, click here: Server Configuration