Every once in a while you may find you need an override that has not been defined. To make one on the spot open the first drawing in your set and make the appropriate changes to the plot dialog and save the setup.
Save the drawing and invoke Publish. Make sure the drawing you changed is at the top of your list of drawings to publish. Select all the drawing layouts and use the down arrow by the what to publish to select the override you just made. Publish will apply it to all of the drawing in the queue.