Workplace Planning and Employment. HRM practitioners require an understanding of why and how jobs are filled and the various methods of recruiting candidates. Emphasis in this area is on understanding various staffing means and making good decisions about job candidates that use valid and reliable measures and are within the legal parameters. Interviewing technique is also a major component of this knowledge area. This section also covers voluntary and involuntary dismissal of employees. Specific references in this text; Chapters 3, 4, 6 and 7.