What are some ways to assess the talent of a business development manager candidate?

Having an interview with him and asking him about his knowledge in the company's business that he is going to work with, and knowing how can he promote the products or services of the company, and how he can help the company in gaining new customers and giving the current customers the best service, and testing his or her communication skills, business knowledge, and Negotiation skills; so the best way to assess any person's skills or talent is by having an interview with him or her and you can judge on them by that, a CV is never enough to judge any person in the world , it's all about the personality and how hard working the person is to reach for his or her goals.