Press on the cube "Calendar".
Select the month you would like to create an appointment in, by navigating at the top, using the left and right arrows.
Press the day when you would like to make an appointment.
Then you'll get an overview of all the appointments during that day. Press on the button "Add appointment".
Choose from the drop down list the calendar you want to make an appointment in.
Check "Appointment lasts all day".
Fill in the day of the start of the appointment.
Set it so that the appointment should be repeated 'Daily'.
Choose the date up to and including when the appointment takes place.
Fill in a description.
Press on the button "Ready".
The appointment has been added to the calendar and gets a color as selected in the calendar.