The Image Layer Settings dialog consists of several pages:
To reach the Image Layer Settings dialog:
Right-click the map chart visualization.
Select Properties from the pop-up menu.
Comment: You can also click the map chart visualization to make it active and then select Visualizations > Visualization properties on the menu bar.
Go to the Layers page, and click to select the image layer of interest.
Click Settings.
Positioning Markers on an Image Layer