Abstract
Human resource development of project manager (PM) is one of the subjects which many information technology enterprises have. Recently, mentoring attracts attention as a new technique of talented development method in the enterprise. So, the society for the study of PM mentoring was started to research to use of mentoring. An important element as capability of PM is how to master the human management skill which exists as unknown knowledge. As for raising of these unknown knowledge areas, mentoring technique is effective. As the first step of the research activities, this paper describes a research result about the subject of the PM raising and request for development method for PM in an information technology enterprise.