One of the parts of TUTOS you will probably use the most is the calendar part. Here you can define appointments you have, see an overview of the appointments of members of the teams you are yourself a member of or see all the appointments there are in stored within the TUTOS system.
In the next sections you will learn how to make effective use of the calendar system. It may not look like something like Evolution, Notes or even MS-Outlook to you but don't be fooled by its sober looks. There is a lot more under the hood than you might think at first glance.