The main function of a sales department is attract and retain customers. Many moving parts are tied to this but the number one objective is to attract and retain customers. That said, sales activities need to been co-ordinated i.e., to meet the customer demand with appropriate supply.

The next is to increase the sales volume considering a particular period of time. Then to find appropriate persons/ agencies to carry out the sales activities. To help marketing department in meeting the sales volume fore casted by then. To give motivation by appropriate means to the sales persons and to give appropriate training to them in carrying out the sales activities successfully.. they analyze the demands of markets. they study the consumer's psychology, study market fluctuations, prepare sale budgets, explore new markets and the process begins again - attract and retain customers