Add names to Hangouts video calls in Google Calendar
You can now give a name to Hangouts video calls in Google Calendar events. This name makes it easier for you and other guests to join the video call. Note that this feature is only available to domains that have enabled Google+ Premium Features.
Release track:
Rapid release
Editions included:
Google Apps for Business, Education, and Government
For more information:
https://support.google.com/a/answer/4362302
Reference by : http://www.google.com/