The arrows located on the left and right in the middle of the screen scroll the view in the respective direction. Depending on the calendar view, you can scroll from day to day in day view and from week to week in week view. You can also scroll through the calendar by clicking the arrow keys on your keyboard.
Short video on scrolling through the calendar:
Furthermore, there is a selection bar at the bottom right of the calendar with various options for the calendar view. The arrow keys next to the date button also scroll the calendar, either day-by-day or week-by-week depending on your previous selection of the view. To scroll through multiple months, use the calendar's thumbnail view, which opens by clicking the date button. Here you can quickly select a day in the distant future.