The installation process is same as that of any other WordPress plugin.
The configuration page is under Settings –> Udinra Mobile Sitemap Pro of your WordPress dashboard. As of now there is no configuration option. I feel there is no need of having one either.The plugin is designed to create sitemap with best settings for SEO.
The plugin can be activated using License key shared when you bought the plugin.
The mobile sitemap is created after activating the plugin.After that your sitemap file is updated automatically once the content changes.So you do not have to visit this page again.The main sitemap file is index sitemap file (your-domain.com/sitemap-index-mobile.xml).
The index sitemap should be added to Google Search Console and other Webmaster tools like Bing Webmasters.This is also one time activity. The sitemap gets created automatically and is pinged to Google. Search Engines are informed about content updates regularly.