One of the google products Google Calendar to test a new feature called "Sneak Preview". The name of this feature is more interesting than the actual function, but the launch is still limited, so do not be disappointed if some users do not have access there.
And later when the user has access to get there so every time you create a new show you'll see a new view mode that displays a calendar next to the details of your event.
This calendar shows the schedule of each of the people who have been invited to the event (provided you are a friend or colleague with access to information), and the proposed time for your event will appear as a semi-transparent blue box so you can quickly see where you might be a conflict.
You can click on the name of each guest to show / hide them on the calendar if there are more important than others.
Source : techcrunch.com
