: Use a tool like 7-Zip or WinRAR to extract the contents of the .rar file to a dedicated folder on your desktop. Launch FiveM : Open your FiveM client and join a server.
Because this is an "external" utility, it generally does not require moving files into your FiveM application data folder like typical visual or vehicle mods.
How To Create Mods Folder For FiveM — Step-By-Step Tutorial