What is Neena concerned about when it comes to her compensation model, and why it is important to address these concerns? What is trevor's role in helping Nina revise her compensation model and what expertise does he bring to the table? What are some factors that HR managers must consider when aligning a compensation package with the organisation's competitive strategy? What are some methods Managers can use to address equity issues in compensation? What is the pay for knowledge program and how can it be used to address compensation issues