The chat icon is located in the top-right corner of the screen. Click on the chat icon to open the live chat interface (1). Once in the chat interface, you can
(2) Filter chats to find specific conversations.
(3) Browse previous chats for reference.
Click on the chat button (4) to start a new conversation.
Search your connections to find the person you want to message. Leave them a comment and click Send.

Whenever a chat is sent, the recipient will get a notification within RightHub. Notifications are accessible by clicking the bell icon (5) at the top of the screen.