1st round is with HR, 2nd is a mock sales role play Interviewing was straight forward. If you follow a consultative approach to selling you should be fine. Having good questions to ask really helps get a since of what the scenario is about. You do not need to sell in the first call, but instead learn about the business' pain points

First round was with a recruiter a the final was with a manager in my area, although the final round got rescheduled four times. I would recommend going over the sales pipeline and consultative sales for these interviews.