This plugin uses Yandex.Map API service to provide maps on your site. You can point coordinates or address of some places, and put your map to any page of your site. You can add so many maps on one page and so many placemarks on a map as you want. Just use shortcode with parameters. You can use custom fields – ‘latitude’ and ‘longitude’. Now you can use visual shortcode editor. API loads not on every page, but only when it’s needed!