The Chat window will also open when a shared graph is created, it is found at the bottom of the Maltego client window tabbed next to the transform output. This Chat window allows users on the graph to communicate as well as provides status updates about what is happening on the graph.
Each different type of message in the chat window has a different color. Clicking the Message filter button will open a window where you can choose which message types you want to display in the Chat window. The image below shows the types of messages that can be filtered and the color that they correspond to in the chat window:
The next button in the Chat window is used to send the graph selection link as a chat message. This will create a message with a hyper link to the selected entities on your graph. Any user that clicks the hyper link will zoom to the relevant entities.
Messages can also be typed and sent from the bottom input bar in the Chat window.