What each student sees depends on their own personal settings computed from the overrides. So, unless you do something, you won't get what you want.
One way to get what you want is to initially set the review options so that no-one can review. Then, at about 4:00pm on Friday, change the review options to allow reviews.
One way to get what you want is to initially set the review options so that no-one can review. Then, at about 4:00pm on Friday, change the review options to allow reviews.