At the top of the calendar preview, you can find three tabs giving you three different options to preview your calendar, either day, week or month.
-Day:
To show the day in term of hours.
To navigate between days, click the arrows forward and backwards beside the written date on the top left of the page
-Per week:
To show the full weekdays per hour.
To navigate between weeks, click the right and left arrows beside the week number at the top of the sidebar
-Per Month:
The default calendar preview to show the full month days.
To navigate between months use the right and left arrows beside the month at the top of the sidebar