The main dimensions of management are as follows:

1) Management of Work: Every organisation is established for doing some work, like a school provides education, a hospital treats patients and a factory produces goods. Of these no work can be completed satisfactorily without management.

2) Management of People: Each organisation is established for doing some work and the same is conducted by people. Hence, it is necessary to manage the people so that the work can be accomplished in a better way.

3) Management of Operations: To achieve the goals of an organisation many operations or activities are needed to be conducted, such as production, sale, purchase, finance, accounting, R&D, etc. Again, management is needed to make sure that operations are accomplished efficiently and effectively

Management is a multi-dimensional concept because it encompasses various aspects and functions that are essential for the effective functioning of an organization. The following are the reasons why management is considered a multi-dimensional concept:

Planning Dimension
Planning is an essential function of management that involves setting objectives, determining strategies, and formulating plans to achieve them. The planning dimension of management focuses on developing a blueprint for achieving organizational goals in the long term.

Organizing Dimension
Organizing is the process of arranging resources and activities to achieve organizational objectives. The organizing dimension of management involves creating a structure that defines the roles and responsibilities of employees, and establishing channels of communication and coordination.

Staffing Dimension
Staffing involves recruiting, selecting, training, and developing employees to ensure that they have the necessary skills and knowledge to perform their job roles effectively. The staffing dimension of management focuses on ensuring that the right people are in the right positions to achieve organizational goals.

Directing Dimension
Directing involves guiding and motivating employees to achieve organizational goals. The directing dimension of management encompasses communication, leadership, motivation, and supervision of employees.

Controlling Dimension
Controlling involves monitoring and evaluating organizational performance against predetermined standards and taking corrective actions when necessary. The controlling dimension of management focuses on ensuring that organizational goals are achieved and that resources are utilized efficiently.

Conclusion
In conclusion, management is a multi-dimensional concept that encompasses planning, organizing, staffing, directing, and controlling functions. Each of these dimensions is essential for the effective functioning of an organization, and managers must be able to balance and integrate them to achieve organizational goals.