The calendar view was designed to help you track due dates in a more intuitive calendar format.
It can be accessed by clicking the calendar view option in the top of your workflow.
You can filter the work displayed in the calendar view with workflow filters just like in the list view. Learn more about workflow filters in this article.
If you click a project in the calendar view, it will give you a quick view of the project. To navigate to the actual project and see more details you can click "View Project."
You can also assign work to team members from this view by clicking anywhere on the calendar view.