Here you can find information on how to access the H5P Settings for each plugin. Note that screenshots below are from the default themes for each platform but the paths described should work. Also, you may have to be an administrator to access the settings.
The H5P settings for Drupal can be found under the 'Configuration tab'. For example, 'http://your-website.com/admin/config/system/h5p'.
Click the 'Settings' tab then 'H5P'. A possible path is: http://your-website.com/wp-admin/options-general.php?page=h5p_settings
Click on 'Site Administration' and then 'H5P Settings'. An example file path is 'http://your-website.com/admin/settings.php?section=modsettinghvp'