You will be able to join the room by clicking on the "Join" button.
Left side of the page lists all the rooms you have joined and allows quickly switching between them.
Middle of the page shows all the messages exchanged in the room.
Other Rest of the menu show some basic information about that member.
The options available on settings page are as below: Name colour Name colour option allows you to change your nickname's colour and will appear to others in the selected colour.