Following a test this past summer and a wider rollout in late October that allowed Instagram friends to live stream together, the service today is adding the option for you to request to join a pal’s live stream, just in case you believe your presence is required.
Instagram’s live mode works a lot like Periscope, which allows people to watch a user’s live stream and send comments or hearts.
Today’s update allows the live streamer to add a request button on their page so friends can request to jump in on their solo stream if they didn’t invite anyone to go live with them from the start