Is there a master calendar available for all users to view?

Answer:

The short answer is yes. By default, the DivvyHQ Calendar interface provides an aggregate view of all your calendars (a master calendar view) and their associated content items. This aggregate view is determined by the individual calendars to which each user has been given access. In other words, if I (as a user) have been given a role (access/permissions) on 5 calendars, my default calendar view will display all five calendars in aggregate. By default, account admins will see all calendars that have been created. You also have the ability to utilize the calendar filter to drill into specific calendars and adjust your default calendar preferences.