PURPOSE
A calendar can be used for:
Create an appointment
First, open google calendar via the apps (squares in the right top when you are logged into your google account). Then read and fill in.
NB: It is important to note that the use of this e-mail address and everything done in the gmail domain is for educational purposes. Everything is logged, and the management or system administrator have access to everything in the domain, including e-mail conversations and chats.
Sharing calendars
As you can see on the left, it is possible to add a lot of calendars, that you can turn off and on, simply by clicking on the coloured box in front of it. To add one of a friend or colleague, you can click on the arrow next to “other calendars” and you have several options: