Add event blog postings that populate a monthly calendar sidebar widget.

I have a MarketPress network. I use blog postings to "showcase" shop promotions, gallery exhibits and community events. There is one page that lists all blogs by date, keeps the most recent showcases at the top and is easily searchable. That is the page I would like to add a monthly calendar sidebar widget to...

The event+ plugin builds event postings much more powerfully than what I can do in my regular blog posts, but appears to do this in a separate "site". Is this correct? I would like to list event postings in with showcase postings, and then have a monthly calendar sidebar widget highlight the active dates that link to the event postings. Does events+ have a calendar widget that pulls in all the events into one small sidebar monthly calendar?