A method of operating a graphical user interface employs an input control enabling a user to provide an input value for a field. The method includes, during a first period of use of the graphical user interface by the user, automatically presenting a predetermined first input value as a default input value for the field. This may be a system default value for example. During the first period, the values provided by the user are monitored to identify a distinct second input value receiving at least a threshold use by the user. Then during a subsequent second period, based on the threshold use of the second input value during the first period, the second input value is automatically presented as the default input value for the field.