Power State Empire is a software development firm which headquarter is based in Illinois, United States. In June 2022, the firm hired five graduate trainees whom two of them are responsible for customer service (Title: CS Trainees) and the remaining are responsible for offering software development and website maintenance service to different clients in the state (Title: DS Trainees). To manage their performance systematically, the supervisor of these trainees set four goals for them to achieve: Goal no. 1: The CS trainees are expected to make customers happy. Goal no.2: The CS trainees need to handle the customer's request as soon as possible. Goal no.3: The DS trainees should be able to render website maintenance service with superior quality. Goal no.4: All trainees should achieve a good sales result