Navigate the Administration block and expand "Site administration", "Plugins". Check that there is no heading for "Calendar types". Install the following calendar plugin in the calendar/type directory. git clone git@github.com:abgreeve/moodle-calendartype_japanese.git japanese Navigate back through the administration block and check that there is now a heading under the "plugins" section called "Calendar types" and under that is a link for the Japanese settings. Clicking the link will take you to a settings page for the japanese calendar type. Un-install the plugin. Make sure that the "Calendar types" section is now removed from the Administration block.