FiroKun on "[Plugin: Simple Category Posts] How can I configure the plugin?"

I installed the plugin in a 3.6.1 WP installation.
I pretty don't know how to configure the plugin. I mounted it, put the title, the Categorie ID (that I don't sure how to get it), the other configuration, and when I go to the page, it only show the Title.
Here a screen of how I have configure the plugins if I had doing anything wrong.
http://fotos.subefotos.com/392a908aef9fad007ec441851ad34676o.png

http://wordpress.org/plugins/simple-seo-categories-posts/