Delete the event under the title Briefing
Modify the event under the title Briefing, so that Stelios Lampropoulos is Chair and the presence of Kostas Goutoudis is optional. Set a reminder one hour before it starts.
Remove the attendee Stelios Lampropoulos from the event under the title Briefing.
Add the website http://www.test4u.eu as attachment to the event under the title Briefing
Delete the attached website www.test4u.eu from the event under the title Briefing.
Accept the invitation for the event with the title Business Trip.
Decline the invitation with the subject Business Trip.
Create a new task under the title Shopping List and text Milk, eggs in the category Personal.