Menus allows you to start a command without having to remember keystroke combinations, but just in case, keystroke combinations are available as well.
Buttons save even more time than menus.
Colours are used to distinguish between student, instructor and practica information. Lists gives you the ability to choose from a list of values. This reduces the chance information is entered incorrectly, and saves time. Tabs makes the best use of the screen size by displaying information in logical sections. You have quick access to all the information without the clutter.