The "P" in PM is as much about People Management as it is about Project Management.
– Cornelius Fichtner
Throughout your career, you may have noticed that it's not enough to prioritize and allocate a few available people to high-priority projects. Problems arise quickly, especially, if your business depends on a few key resources. What do you do when employees get pregnant, take a sabbatical or get sick? Or what if your employees are overworked, dissatisfied, and therefore not as productive as they could be?
Employing a resource manager is a good step forward. Resource managers take care of collecting and updating employee data, capturing staffing requirements according to the project portfolio, assigning people to roles, staffing at the beginning of a project (as requested by the project manager), resolving resource conflicts, and more. People management.