Click on steam's community first, and then click on the group. If you don't join the group, find a group to join. Then open the game options and find the game settings. Just look at the steam team label settings.

Anti-terrorist elite: global offensive, formerly known as Anti-terrorist elite: global offensive, is a first-person shooter game jointly developed by VALVE and Hidden Road Entertainment and released by Valve Software.

Global Offensive is a sequel with a distinctive anti-terrorist elite color. They look very similar, but there are some minor adjustments and balance recovery. This is a demanding and high-tech multiplayer game, and this has not changed. It's really great for some demanding professional players.