3 interviewers with 3 questions each 30-45 minutes long. Lots of follow up questions as well so make sure you know what your talking about.
Must use Star format and Quantitate Data. They want to know you make good decisions and you can lead. I included a lot of stories that tied with their leadership principals and use those key terms in my stories.
My personal tip is to have 10 stories/business lead scenerios that include some type of numbers (growth numbers, customer survey scores, book keeping, etc) , so when the ask you question all your doing is picking a story that best answers the questions.