Customize Rectangle - Settings
The Settings tab allows you to access the settings property of a Rectangle drawing object. A Rectangle consists of a box with border lines of one color and an inner filled area of another color.
Access in a chart by double-clicking a border line of a Rectangle drawing object or right-clicking on the object and using the Edit 'Rectangle' menu sequence. Select the Settings tab.
Lock 
Controls the settings for the selected rectangle.
- Locked - Check this property to lock the rectangle in place so that it can't be moved by the user.
Set as Default - Check this setting to make the current settings the default for new rectangles.
Click OK to apply changes or Cancel to exit without changes.