You can use Hangouts to talk with more than one person at the same time.
- Conversations can include up to 150 people.
- Video calls can include up to 10 people.
Everyone who wants to join a group conversation must use Hangouts.
From Your Computer: (You will need a webcam on your computer. )
- Go to hangouts.google.com or open Hangouts in Gmail.
- Click New conversation New group.
- Enter or select the names, phone numbers, or email addresses of people you want to add.
- Click the group in your list. To start a group conversation or video call, click Message or Video call icon.
OR
- In your calendar, create an new event. Invite your guests. (You can do this ahead of time!)
- When it is time for the meeting, go into the event, and click “Join meeting,” by the green video icon.
- Everyone in the group needs to do this!
https://support.google.com/hangouts/answer/3111943?hl=en&ref_topic=6386410