Setting up

A couple questions...

I keep seeing that this plugin relies on the Post Indexer, but does this plugin display the most recent posts for a specific site, or a whole multisite?

I read that there's a shortcode for the plugin, but can't find instructions on use...

What I'm trying to do is display recent multisite network posts in two ways:
- As a page on the main site of my multisite
- As a mandatory widget on all subsites (planning on using a pull out widget)

Your help is appreciated!