Changing the legend location
The Location tab positions the legend or map key, relative to the image.
Open this dialog by clicking Fill in the analysis Map Control Editor.
Check Visible to display the legend on the analysis map. Select a radio button to position the legend.
If you select Custom location, you must specify the dimensions of the legend box. For all other locations, the box is auto-sized. The number of items displayed in the legend is the same as the number of data points defined in the shading.