So I have always sized  my windows to the rough opening sizes and then just ordered them a little smaller.  ie  3'x5' window would be framed 3'x5' and my supplier orders a 3'x5' RO (rough opening) thus when it arrives, it comes 1/2" smaller.  35 1/2"x59 1/2".   That is all fine, but that does not work for making the window schedule look right.  All that to be said:  Is there a way to have your dimensions go to the RO size instead of the window?.  I want my dimensions to be spot on for the framer not to where I exactly want the window.  Probably something small that I have been missing all these years, but I have not found it yet.   
  
THANKS 
ANDREW 
CH v6-v17