About Messenger Rooms
Messenger Rooms allows you to call and spend time together with family, friends, and people you share interests with. Using the Messenger app or by opening the Messenger website in your mobile or web browser, you can create rooms where larger groups can be on a video chat. You can then send invite links to your contacts and group chats in WhatsApp so they can join these rooms, even if they don’t have a Facebook account or the Messenger app.
Shortcuts to Messenger Rooms are no longer available within WhatsApp. Messenger is a separate app and website, so when you create a room, you’ll need to log in with your Facebook account. Rooms take place outside of WhatsApp, and video chats in Messenger Rooms aren’t end-to-end encrypted.
Any WhatsApp user you share a room link with can join a room, so only share this link with trusted individuals. It's possible for someone to forward the link to other people. If so, those other people can also join the room, even though you didn’t send them the link directly.