Team Calendar not listed to add to page

[sbott]

I am new to using calendars in Confluence (but not new to confluence as a whole).  I have a space called PMO where I have created a TRN Team Calendar.  I am needing to place this team calendar into a page within the PMO space.  When I add the calendar widget and attempt to find the TRN Team calendar, it doesn't appear in the list options.  Is there something I am doing wrong or a setting I need to review?  Thanks in advance