The method for closing a Sequence/Screen is as follows :
  Click on the Tree-view titled "Sequence & Screens" on the extreme 
   left of the OCM UI.
  Select the particular sequence or Independent Screen you want to 
   close by clicking on it.
  Click right mouse button on the selected sequence or on the selected
   Independent Screen and a menu pops up, from where if "Close" menu 
   item is clicked the selected sequence or Independent Screen gets 
   closed.
  Sequence or Independent Screen can be closed from the File menu 
   also. ie. Select "File > Close > Sequence > sequence name" or Select
  "File > Close > Independent Screen > screen name".
  A message comes that "The sequence has been closed successfully".
