If your course is wider or taller than that you need to change the plot size. How you ask, that's what uncle DanO is here for. Click on the file pull-down in your arch. Program, then click course properties. Type in the name of your course.
CC is rude please try something else.
And then you will see two boxes for course size. Fill out the appropriate data. Don't worry about getting your plot to big, we can trim it down to size at a later time. At this stage you can do one of several things. I tried toilet paper for this once, but in an emergency, well never-mind.