In the new update just released today, Instagram has dramatically increased this number and now allows up to six people to join the conversation at the same time. In June, Instagram first launched video call support in the app, which allowed up to four people to chat simultaneously via video.
This feature is available through instant messaging and users can chat with anyone who has sent messages to the app in an earlier time. Of course, you also need to make sure that the person you want to make a phone call through Instagram is actually a member of the platform, since only among users is allowed.
During video calls, you can still navigate the Instagram stream while your friends' videos are minimized in image mode within an image at a corner of the screen.
It is worth noting that if you see Instagram's competitive apps, Snapchat allows 16 people to join a video call, while FaceTime can double the number in 32.
How to Use Instagram Video Call Mode
To use the feature, navigate to Instagram DM (Direct messages) and tap a user name or group to open the conversation. You can also start a new conversation by tapping the "+" icon in the top right corner DM and selecting the people you want to chat with via video.
Once you have opened the conversation, tap the video camera icon in the top right corner. The person or group you are calling will receive a notification that you are calling them with videos. If someone is in your DM and you do not specifically want to call him or her, you can block or delete the conversation.
See also the relevant video: