Enable the Position Menu Option
In Framework Windows applications:
Select this option to disable the Position menu option on pop-up (right-click) menus.
A designer can choose to prevent users from changing the relative position of the Frameworks display panes. When this option is disabled, the user will not be able to cause a pane to float either.
In .NET applications:
Select this option to allow panes to be docked, undocked, and dragged around.
This property is in the Framework Details tab.