The assumption is that you will either go to "your section" exam OR you will attend the Tuesday exam. If you are in Section i and wish to attend Section j's exam, please get confirmation with the professor first that there will be room. For example, if you are in Section 2 and wish to attend Section 1's exam, please check with Prof. Ruehr first to ensure that there will be room for you in this exam.
There should be plenty of room in the "extra" exam time (Tuesday), so feel free to attend this exam.
The Tuesday and Saturday exams will cover: