How to video chat with up to 6 people in Instagram
Instagram's update in November 2018 increase the numbers of people you can chat with to 6. In June 2018, Instragram release the video chat option inside of direct messages. At that time, the video chat was limited to 4 people.
They have now increased it to 6 people. You can access video chat inside of direct message window. Make sure you update your Instagram app to get this latest update.