1) Install the plug in
2) Put the calendar element (Visual Element) in the page you want the calendar to be seen

3) Set Up the work flow when page is loaded.

Get the Start Date and end date of the event

Start date: Current date/time date change to 1
End date: Current date/time + months:1 changes date to 1 +days -1

4) When the month is change the start date and end date base on the output of the calendar first day and last day of the month

5) Do a search for the event.  
Constraint
Start date = calendar first day of the month
End date = calendar last day of the month