Much like the name implies, a Change Manager is tasked with organizing, tracking, and suggesting the changes in which the implementation of the company's structure is necessary for higher efficiency and profit. They are meant to make these processes as effective and efficient as possible.
Like many others, this role is versatile, both in how they work and where they work. They may need to cooperate with several other departments within one company, act as advisors and consultants to a particular institution for years. During that time, they may be tasked with analyzing the various processes and pieces of the organization. Or they may work more in a freelancer style, hopping from one employer to another and offering their expertise as needed.
A potential candidate for this position is generally asked to have at least a Bachelor's degree in Business Administration and Management or a similar field of study. Some employers may even ask for a Master's degree or years of experience.