Categories don't work on other sites?

At its core the plugin simply provides you with a couple of shorttags to display aggregated information from your page. This shorttag can be used in posts or pages. I recommend just adding the shorttags on a page and see the outcome.

If you install the plugin, you are able to categorize them in the site admin panel that allows better filter options for the shorttags (e.g. only list pages in a certain category).

I am not sure, what exactly you are trying to accomplish on your page, so I might need some more details.

I’m working on this blog community, where the categories are preassigned and shared to the whole community of blogs. I’ve taken away the rights to create categories with another plugin (User Role Editor). I thought this is the plugin to assign the categories as super admin and then share them to other blogs in the network to use when creating new posts/pages in their site. I stumbled on this plugin again and again with different search word, so I thought this was the plugin to do that kind of a thing.

Oh okay. I don’t think this is the plugin your are looking for. This plugin allows you to assign categories to whole blogs and not individual posts. The categories for posts are completely unrelated to the categories from this plugin here.

Okay, well, thanks anyway for your patience to clear up that for me. ??