The Chat feature allows you to view and manage the chat for a channel, whether you are the streamer or a moderator. Chat messages will appear in the main view, with the currently connected users on the right. Above the users, you'll see the current number of viewers and active users in chat.
There are few interesting features you can do to help keep the channel's chat just the way you want it to. You can easily clear all chat messages from the channel by clicking the "Clear Chat" button. Do note that this will not just remove all messages from Mix It Up, but also from the channel's chat as well. You can also disable, then subsequently re-enable chat if you want to prevent anyone from being able to type something in chat. You can also send messages directly to chat via the text box at the bottom. These messages will be sent as the main account logged in (Streamer/Moderator) and not a Bot account. Currently, you can send regular messages and whispers by using the "/w @USER" command like normally in chat.
If you right click a message in the chat window, you'll provided with a context menu that will allow you to delete that specific message or open a pop-up displaying profile information about the user that sent that message. You can also view a user's profile information by clicking on their name in the user list:
On this pop-up, you can see some basic information about the user and also have the ability to take some actions on them: