Player settings allow you to set properties such as the race of a given player, whether computer or human controls it, and what technologies or special abilities are available to it. Using the player settings for units, upgrades and special abilities, you can control the technology tree or upgrade path for each player.
In the Player menu, select Settings. You will see a dialog appear with four tabs across the top: Properties, Units, Upgrades and Special Abilities.
Note: Player settings only apply to games where the game creator has selected the “Use Map Settings” game type. For more information, see the Game Types section.