Add Courses on Assignments page

Sorry if I put this one in already. I'm working on my Assignments page, by instructor. I would like the ability to add a course from this page. So for example, an instructor listed a PhD course in fall, but this year we need to move it to winter. I have to go out of the Assignments page and go back to the Courses page to add the course, then back to the Assignments page to add the instructor. This happens to me a lot, as we have to move our courses around quite a bit from year to year.