When you create an index, it has its own URL (which you can see just underneath the Title on the index edit page), just like a "normal" post or page.  However an index won't automatically be shown anywhere on your blog unless you make a link to it somewhere.

Usually, you would put a link on your blog menu.

EasyIndex primary indexes will appear just like any other post or page on the WordPress admin "Menu" page and you add them to a menu just like you would other posts/pages.