How can I start a group conversation?

On mobile devices:

1. In the conversation list, tap People .
2. Tap Create group  .
3. Name the group, e.g. Team meeting.
4. Tap NEXT.
5. Select people to add to the group. You can create conversations with up to 300 people.
6. Tap CREATE.

Or, you can add people to an existing 1:1 conversation.