How are candidates shortlisted through preliminary and selection interviews?

Mostly, there are two types of interviews in a selection process. (i) Preliminary Interview: The candidate is physically and mentally examined in this interment. Those found deficient are not included in subsequent process. (ii) Final Interview: It is mostly conducted in two stages. In the first stage, personnel manager collects detailed information regarding candidates. Those found suitable on the basis of appraisal are directed for interview with those departmental managers who had put up demand for their services. Departmental manager converses face to face with the candidate on the basis of nature of work and having satisfied himself, declares the latter successful in the interview.