Click on the Schedule tab and then on the Calendar view.

1 Customize your view by clicking on "Show to-dos", "Show milestones", "Show activities". Choose from the drop-down list if you want to see "All", "None" or the "Lowest level" of the activities.

2 You can scroll in the calendar by clicking on "Today" or by selecting from the drop-down list the month and the year you want to see. With the single arrow head below you can check the following and previous months.