Use the Compass property to specify where to position the Legend relative to the ChartArea. Select from four compass points around the ChartArea. Compass can be accessed at design time under the Legend node of the Visual Studio Properties window.
By default the chart automatically positions the legend. Use the X and Y Location properties to fine-tune the positioning. These properties can be accessed at design time through the Location node that is under the Legend node of the Visual Studio Properties window.
By default the chart automatically calculates size of the Legend. Use the Width and Height size properties to fine-tune the size of Legend. These properties can be accessed under the Size node that is under the Legend node of the Visual Studio Properties window.
See Chart Elements Position and Size for more information.