The options in the Filters panel determine the display of options and settings in the right-side panel.
Global Defaults
When you click Global Defaults in the Filters panel, the right-side panel displays the common set of options for all countries.
If you modify a global defaults option, then that selection is applied to all countries and cannot be changed on a per-country basis. Subsequently, if you select a country and view its options, the modified global defaults option will be inactive in the GUI.
Country listing
Lists the countries that have geocoding datasets installed and have custom options and return values. When you click a country, the right-side panel displays the custom options and return values for the selected country. Most countries are covered by the global defaults.