CFA Answer sheet

I know we are not allowed to use Pen on the answer sheet. How do we fill the name, seat numer , candidate numer etc? with pencil only or we can use pen there? is there any sample sheet we can look in advance to be comfortable on that day? I know we are not allowed to look around or talk etc, I am afraid how will I know I am not filling any thing wrong which makes my answer sheet disqualified

You use a pencil. You will have your exam ticket with you so you do not forget your name (or CFA ID#).