You'll find full instructions on using mods below. To access the Mod Manager, select the Mod Manager tab on the pre-game Options window (this is the window that appears when you launch the game). Once you have installed a mod, you can enable it by using the Mod Manager. There are two ways to install mods: you can either subscribe to mods via the Steam Workshop (this installs the mods automatically), or you can download mods from other sources and install them manually.