Embodiments of the present invention relate to making optimal use of display screen real estate in a role-based user interface. In an administrative mode of the user interface, a full range of navigation functions may be displayed. In a working mode of the user interface, navigation functions may be hidden to allow most screen area to be devoted to a working session of a transaction. This distribution of screen area more accurately reflects the amount of time a user spends in the administrative and working modes, respectively, and consequently makes the user interface easier and more convenient to use.