Independent Screen can be deleted by following any of these
two methods :
    
Using Mouse :-
Using Menubar :-
  
Using Mouse :
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1> Select the Screen, which is to be deleted from the tree view
by clicking left mouse button on it.
  
2> Clicking right mouse button on it,a pop up menu comes,from where
if "Delete" menu item is selected then the Screen gets deleted.
  
Using Menubar :
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1> Click on "File > Delete > Independent Screen" from the Menu bar.
A window appears with a title "Delete Independent Screen".
  
2> Select the Screen which is to be deleted from the drop down
box.
  
3> Click on "Delete" button to delete the Screen or click on 
"Cancel" button to cancel the proceeding and return to the OCM user
interface.