Where should a Project Manager input billing rates for a client that negotiates rates project-to-project?

The correct choice is to input billing rates for a client that negotiates rates on a project-to-project basis as Project Billing Rates. This option is specifically designed to accommodate variability and customization for individual projects. By utilizing Project Billing Rates, project managers can set specific rates that align with the unique terms of each client agreement.

This flexibility is essential in situations where clients may expect different billing rates depending on the specifics of the project or the services rendered. Project Billing Rates allow for tailored financial arrangements, ensuring that billing reflects the negotiated terms accurately.

Other choices like Company Billing Rates and Global Billing Rates tend to apply a standardized rate across the board, which does not cater to the unique needs of clients with varying agreements on different projects. Department Billing Rates could provide some customization but typically would be broader in scope and not as finely tuned to individual project negotiations. Therefore, Project Billing Rates are the most appropriate choice for handling client-specific arrangements effectively.