Darts help with the shaping of a garment but the placement of a dart is not really set in stone.  We show you in this demonstration on how to change a location of a dart, from one position to a new position on your pattern.  In my example, I'm moving a dart that is located at the waistline of my bodice and moving it to the side seam, closer to the bustline.  I want to eventually take my basic full bodice and extend it to make a blouse and sometimes it's just easier to move it to another location.  This way you still get the benefit of the dart but it's a little more out of the way.  Once you see how this is done, you'll have no issue replicating it yourself.