2 steps for interviews. First, with HR, then secondarily on a different day, meet with several different current PM staff and answer questions, talk about "the time when you solved a problem, a time when you had to deal with a difficult client or project circumstance..." the typical kinds of questions. Strangely, you are not interviewed by management at all .

Meet with HR, then several members of the team. If you get past preliminary questions they may have you meet with managers. They want to see what type of character you have.