Which of the following is NOT an aspect of staffing?

The correct option is Authority.

Staffing is a key function of management that involves acquiring, developing, and maintaining a competent workforce to fill various positions within an organization. It is primarily concerned with human resource planning and management.

Let's analyze why "Authority" is NOT an aspect of staffing by breaking down each of the given options:
1. Recruitment: This is the process of searching for prospective employees and stimulating them to apply for jobs in the organization. It is the initial step of staffing.
2. Selection: This refers to the process of screening and choosing the most suitable candidates from the pool of applicants. It is a critical component of staffing.
3. Training: Once selected, employees need to be trained to equip them with the skills required to perform their jobs effectively. Training and development are vital aspects of staffing that ensure employee growth and efficiency.
4. Authority: Authority refers to the legal or formal right of a manager to command subordinates, make decisions, and allocate resources. It is a concept related to the organizing function of management (specifically, delegation and organizational structure) rather than staffing itself. While staffing places people in positions, authority defines the power relationships between those positions.

Therefore, among the options provided, Authority is the only term that is not a functional aspect of staffing.