How to execute a cfg file

1. Open Steam and right-click on cs:go in your library.
2. Go to Manage -> Browse local files.
3. Go to csgo -> cfg.
3. Drag and drop your cfg file into the cfg folder.
4. Open your console inside cs:go with ; (the key under ESC).
If nothing happens, make sure you have "Developer console" enabled in cs:go's settings.
5. Type "exec name_of_your_cfg" in the console to test it out.
For example: exec speedrun_coop will execute the cfg file called speedrun_coop.cfg.

losi