Once in-game, you access Penumbra through the Dalamud Plugins menu (default command /xlplugins ). Deep Dive: Beyond Basic Loading
If two mods try to change the same item, you can simply reorder them in the Penumbra menu to decide which one takes priority. Setting Up the Environment Penumbra.rar
A popular replacement for the official game launcher that allows for plugin injection. Once in-game, you access Penumbra through the Dalamud
The plugin framework loaded by XIVLauncher that hosts various in-game tools. Penumbra.rar
You can enable, disable, or swap mods while the game is running without having to restart.
Because it doesn't touch your installation, there is no need to back up your entire game or worry about corrupting your install during a patch.