XY charts are used to visualize the priorities of the selected
view and criteria of the project. The Bubble chart is an XY chart
in which bubbles represent data points.
The bubble criterion determines the size of the circles
around the elements. You can drag the yellow bars to zoom in on the
chart.

You can select a Connector attribute that connects all
of the elements with the selected attribute with lines. On the X axis,
you can display both priorities or estimates and dates. The connector
feature is useful when you want to visualize changes of an element
over time in form of a trend, where the elements have a common denominator.