Shown there will be local businesses that have registered their accounts with Google+ and, of course, your own organisation will be displayed when others use the feature. Places includes a simple reviewing and rating facility where people can make comments about an entry and rate it.
The selection of places displayed may be small or large depending upon the location indicated and, being a comparatively new and little known feature, it will be by no means complete and ratings may come from just one or two customers so care should be taken in paying too much attention to them.
You may well wish to consider checking whether your organisation has any comments, however, from time to time and adding your own comments if appropriate.
If you have any events coming up that you would like to publicise then use the Events icon, accessible from any Google+ page.
It is very simple to set up with walk-
It is also a simple matter to have the Event shared as an on-
Setting up a Page