First they call you to start the interview process and will continue calling you as you progress (may take 1+ weeks). Be yourself and keep calm. Remember to ask questions and research the company, business intelligence, data visualization. Expect a background check: education, work experience etc. Work hard at learning the product and building your workbook (I advise several hours minimum). This will get you to the last step - the demo. Prepare and work hard for the in-person demo. Practice using the product. Anything sales related means that your are expected to ask questions to the 'client'. You need to figure out why they are looking for a BI solution, who they are evaluating, budget, # of users, next steps. If you don't know something say you will check later. The idea is to see you perform in a sales situation.