To take the final exam for this course first you inform the instructor (Dr. Vicars or whomever is your instructor) that you have finished your quizzes, your paper, and your video and that you are ready to take the Final Exam.
Your instructor will add your name to the "Proctored Finals" student list and let you know that you have been added.
At that point you need to contact one of the official Electronic High School proctors in your area--which the you can find by logging into the "Proctored Finals class" at EHS and looking at the list.