The current accounting system does not support these functions, meaning the accounting department is required to produce the information manually, which is both complex and time-consuming. WW's managers are concerned that this delay in obtaining management information may be putting the firm at a disadvantage in the marketplace. The managers are therefore currently considering the purchase of a new, more complex, accounting package that will easily allow the production of the management accounting information that they need. WW has a small accounting department with six members of staff. All of these staff members have been employees of the company for many years. The current accounting package has been in use within WW for the last seven years. Your task: Using Lewin's three-stage model, explain how WW could manage the changeover to the new accounting package