To invite a person into a chat room, you can @mention them.

Use to mention a specific person in a group chat room and invite them to that chat room. 

1. In a chat message, type and begin to type a person's name.

2. To address a comment to a specific person or invite them to the chat room, select a name from the list of suggestions.

3. Press Enter. The person's name appears as a hyperlink in your message in the chat room.

4. To open that person's profile page, click the @username hyperlink.