A method of setting alert thresholds in the context of a real-time dashboard chart. An application program displays a graphical user interface (GUI) and dynamically updates a chart of real-time event data. The chart includes an event threshold bar displayed concurrently with the real-time event data. If the real-time event data has exceeded an event threshold value that corresponds to a position of the event threshold bar, the application program executes a pre-defined response function. If a click and drag input is received while a cursor is located over a graphically-textured handle located on an end of the event threshold bar, the application program moves the event threshold bar to a new location and updates a numerical threshold value that corresponds to the position of the event threshold bar. The numerical threshold value and a unique identification symbol are displayed in close proximity to the graphically-textured handle.