AHP Sitewide Recent Posts Install


I am trying to install AHP Recent Posts so that I can get a river of recent posts to flow through the homepage. Hope that makes sense. I installed the plugin in the mu-plugins and can see it in the site admin options. So far so good.

Then when I go to widgets, there is no sign of it. I am thinking it has to be a widget to be able to use on the WPMU-triden theme. Text box? Or does it have to be coded in somewhere else?

Help please! I have searched every where I can think of for an answer.