Specify this setting for each component that you want to span multiple segments.
Even if a label is set to Span Outside Segments, it must be positioned outside the plot to label the span
For example, if the Anchor Component is Feature, set the Attachment to Bottom Center adjust the Y Offset to a positive number so the label will appear above the feature.
The None setting forces the label component to the outside of most segments. However, on some segments, you may need to use the Flip Label command to flip the label to the outside.
The span label is inserted at the location you click, and the values contain the overall data for the contiguous plots.
The plot segment to label with the span must be one unbroken element. For example, in the tutorial drawing Plot-3.dwg, you can see that the top of the plot group is one segment, so a span label can be successfully applied.
However, the left side of the plot group is broken up into three segments, as shown below. The span label will not label all three. If you want to label the overall distance of that side, you would need to redraw the left side as one plot element.