Functions of management can be classified into two categories.
(i) Main functions 
(ii) Subsidiary functions.
A. Main Functions :
(i) Planning :
(a) Planning is the primary function of management.
(b) Planning is a constructive reviewing of future needs so that present actions can be adjusted in view of the established goal.
(c) Eg. Writing a book starts with planning.
(ii) Organising : 
(a) Organising is the process of establishing harmonious relationship among the members of an organisation.
(b) Organising function work is assigned to employees who are given authority to carry out the work assigned and made accountable for it.
(iii) Staffing :
(a) Staffing function comprises the activities of selection and placement of competent personnel. 
(b) Staffing refers to placement of right persons in the right iobs.
(iv) Directing : 
(a) Directing denotes motivating, leading, guiding and communicating with subordinates.
(b) Employees are kept informed of all necessary matters by circulars. instructions manuals, newsletters,
notice-boards, meeting. participative mechanism, etc. 
B. Subsidiary functions :
(i) Innovation :
(a) Innovation refers to the preparation of personnel and organisation to face the changes made in the business world.
(b) Innovation includes developing new material, new products, new techniques in production, new package, new design of a product and cost reduction.
(ii) Representation :
(a) A manager has to act as representative of a company.
(b) Manager has dealings with customers, suppliers, government officials, banks, financial institutions, trade unions.,etc
(iii) Decision-making :
(a) Every employee of an organisation has to take a number of decisions every day.
(ii) Decision-making helps in the smooth functioning of an organisation.
(iv) Communication : 
(a) Communication is the transmission of human thoughts, views or opinions from one person to another person.
(b) Workers are informed about what should be done, where it is to be done, how it is to be done and when it is to be done.