The Category Axis tab configures the X axis of the graph. The X axis has two labels: Title, which is the name of the X axis and Label, which are the values shown along the X axis. To configure the labels, select the one you want to edit from the drop-down list at the top of the tab. The fields for configuring the appearance of the labels are the same as found on the  General tab.

The lower portion of the tab is only displayed if the X axis shows numeric values. (This means that for graph reports, which always show non-numeric values, the lower portion of the tab is not displayed.) This section of the tab provides three choices for configuring the displayed values along the X axis: