As a user you can view your own agenda. This will show when to work and what special things there are planned.
The calendar works like most convetional calendars. Click on a certain day at a certain time and a poop will be show which ask what yu want to plan/schedule.
You can view your own agenda in different ways. Select an appropiate view for your need.
You can edit an item by clicking the edit icon. After changing the item selec change this of from now.
To delete use the edit icon and then select delete this or delete from now.