Teacher Dashboard viewing student work

When I access my classrooms and attempt to view student work, I cannot see all of my student screens. Is there a command or a setting I need to change to be able to view all student creations on my screen at the same time? I can only see 8/30 students and do not have the option to scroll down to see my other student’s creations. I can however go to the “students” tab (instead of the “assignments” tab) and look at individual work. I appreciate any insight you have to offer.