How to add a new Calendar in Drupal
(pavlos and toddc, 10/1/2015, late night)
Admin | structure | menus | add link …
add a new menu in the Navigation area
enter title, hover title, use node/add, preview, save
click on the newly added item in the navigation menu,
select page, add the iframe code in the body,
set Text Format to Full HTML, tags as Events,
preview, verify all looks good, then save.
click on item, click on track, and find the node#.
Admin | structure | menus … edit the added item,
correct the path from node/add to node/225
(whatever the number is), then save. You're done.
Get out as Admin and check site as normal user.