We do not suggest doing front/back. If the copied would be dark, the bubbles can show through and confuse GradeCam in seeing the wrong bubbles.
You are able to print multiple forms per page for Prac Test 1 for one class but not just for one student. You are not able to print all four tests per student.
When printing the forms, choose the roster you want to print and then check the box to print multiples per page.
Depending on the size of each test will determine how many per page. You can also print at smaller percentages (https://gradecam.zendesk.com/hc/en-us/articles/219811208-7f-Print-Forms-in-Different-Sizes-in-GradeCam-Go-).
I suggest print a few to test if you print at a smaller percentage. Older document cameras have lower resolution so may struggle with scanning smaller forms.
Let me know if you have any other questions.