International Association of Computer Science and Information Technology(IACSIT)
Flexibility is an essential concept for businesses to deal within the rapid change in the business environment. Currently, customers have a power to guide the companies and manufactures as they tell the companies their requirements and thus the companies must attract the best customers to join their services. In this paper, the authors propose a requirements engineering based approach for BPM to support businesses in order to maintain their performance in such environment. They propose a new numerical model to improve the customers' satisfaction in the area of the time to be serviced according to their priority group classes especially the customers within high priority groups.