Please answer this question comprehensively, by applying HRM theory. Thank you.

2. PT XYZ is a local company operates in Jakarta and its surrounding suburbs. The company currently does not have a formal salary and benefits structure. There were complaints from the company's employees about the "unfairness" of the salary level in the organization. One employee perceived she received less salary than other colleagues while she felt she was overloaded with daily works compared to others who have similar job grades. She was thinking that the company must establish a formal salary structure because she noted that without a "fair salary structure would create unfairness. As a consequence, she observed some of her colleagues quit and left the company. The company itself has a considerable high employee turnover rate, higher than industry average. (25 points) a. You are hired as a Human Resource consultant by PT XYZ. What kind of suggestions would you provide to the PT XYZ top leaders? b. How do you establish a "fair" salary structure perceived by PT XYZ employees and at the same time offer competitive salary compared to similar jobs in the market