ATI exams - help!

Hi, I'm about to start a bridge program to get my RN. This program uses ATI for all exams. When I went to school for my LPN, all exams were pen and paper. Can someone explain to me how proctored ATI exams work in nursing school? Will I be allowed scratch paper and pencil to jot down during the exam, or to solve dosage calculation problems? I'm sorry to sound like such an idiot, but I'm only familiar with ATI fir the TEAS exam. Thanks in advance!