Finding people to join you in a Hangout
Here’s how to add people and Circles to your Hangout.
01 Click on New conversation at the top of the Hangouts column and all of your current Google+ circles will be listed. Tick a box and you can start a text or video chat.
02 In the box at the top of the Hangouts menu, start typing in names. Google+ will match them with other people on Google+, even if they aren’t in your circles.
03 Click on the box beside a person’s name and you will add them to your Hangout. You can either send them a text message or invite them to a video chat.