This cannot really be tested directly using core Moodle, only by installing my plugin. Setup Download block_navbuttons plugin from GitHub: https://github.com/davosmith/moodle-navbuttons . You might run the following command from your Moodle folder: git clone https://github.com/davosmith/moodle-navbuttons.git navbuttons Login as admin Install the plugin, but do not make the core change outlined in the README.txt Create a course Add the block "Navigation Button" to the course Ad, at least, a couple of activities to the course Testing instructions Access to "Edit the Navigation Button settings" link in the "Navigation Button" block Check the following text appears at the bottom of the page: "Navbuttons self-test: required core modifications have been completed successfully" Go to some of the activities in the course Check the navigation buttons appear at the bottom of the page and allow you to navigate between activities