- Extract the contents of the release zip in to the game directory.
(e.g. "steamapps\common\Rune Factory 5" for Steam). - Run the game once to generate a config file located at \BepinEx\config\RF5Fix.cfg
- The first launch may take a little while as BepInEx does its magic.
- See the generated config file to adjust various aspects of the plugin.
More up to date installation instructions are available here.