Making events show up group wide in one spot

I have installed the group calendar plugin and all is good but I would like to make all the events from all the groups show up in one place and maybe even be searchable. What are my options??? I saw the note about "See the Single Group Events widget" but not sure where to get it and if it will do the trick for me...

my prob with events plus is the same as my prob with events manager - you have to post new events from the WP dashboard and I don't want that.