You can find instructions here to access the settings for the Need4Viz charts : Format Custom Element.
For the bullet gauge, the available settings are:
Extended parameters
Global
Animation :This setting allows you to determine the duration of the animation (in seconds)
Title of the chart :this common setting is described here →
Title of chart
Values axis :This setting allows you to define the unit as well as its precision, its writing style and its number of graduations.
Legend :This setting allows you to display or not the legend of measures 1 and 2, it also allows you to define their writing styles as well as the size of the display area and the display sort.
Tooltip :This setting allows you to display or not the tooltips and to define their right margin.
Zones
Color zone :This setting makes it possible to define the background zones 1, 2 and 3 as well as their colors.
Markers :This setting allows you to define the color of the marker as well as its size.
Measures
Bar display mode :This setting allows the display type as well as the display sort for cumulative type.
Color of measures 1 :This setting allows you to define 5 colors for measure 1 as well as their intensities.
Color of measures 2 :This setting allows you to define 5 colors for measure 1 as well as their intensities.
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Export HTML :This common setting is described here →
Export HTML
Export FTP :This common setting is described here →
Export FTP