Google Duo has started testing group video calls

INSUBCONTINENT EXCLUSIVE:
A quick chat with buddies always brightens a day, and plethora of video calling apps now makes a virtual face-to-face catch up easier than
ever
in Google Duo code back in March 2018, Google is now rolling out a server-side test that will let groups call each other through app.While
only a lucky few can currently put feature through its paces, you'll have option of pulling seven contacts together for one call when it
does become available.However, according to reports of those that have been able to test it, there are a few lacking elements with Google
Duo.Firstly, that seven-participants count
Secondly, you can't currently add a new participant to an active call
saved so you don't have to reform them every time, while a dark mode is being added to make it easier on eyes at night
We'll keep you posted as to when feature rolls out properly.