Exempt vs. nonexempt: What counts as “discretion and judgment”?

Q. I am trying to figure out if a position that was nonexempt is now exempt. On the U.S. Department of Labor website it states that the position may be exempt if the person who holds the position exercises "discretion and judgment." But what is meant by those terms? I am also unsure whether the employee must meet all the requirements listed on the DOL list, or is it enough to meet just a few? – Monique, Pennsylvania