I initially received a call and an email from an HR contact asking that I call her for the initial screening. At the end, she invited me to come into the office for a full interview, and notified me of the proofreading task. You have to get an 80% on it (allowed two attempts) in order to continue to the next part of the interview. I don't think you really need to study for the proofreading portion. I just reviewed grammar rules the day before and passed on the test on the first try. The second portion was of the interview consisted of talking to the HR contact, an analyst, and the manager of the conflicts department separately. The interview was pretty standard. Not too difficult. Just talked about skills and things on my resume. The two conflicts people were very casual, whereas the HR person was more formal.

3 rounds of interviews, meeting with 2 people each round. The first round was with my would-be direct report and a colleague in the department and the second round was with 2 others in the same department but I would not report to them. Last round was with the associate director. Questions and discussions got broader as the rounds went on. Talked mostly about my direct experience in the first round.