What is a relationship matrix used for in operations management?

A relationship matrix is primarily used in operations management to define roles and responsibilities within a project. This tool serves as a visual representation that clarifies the connections and interactions among various participants in a project. By mapping out who is responsible for specific tasks and who needs to be consulted or informed, the matrix helps to ensure that everyone understands their roles, fosters accountability, and enhances communication among team members. This clarity is essential for effective project management and successful execution.

The other options do not align with the primary purpose of a relationship matrix. Tracking financial expenditures pertains more to financial management tools rather than role definition; assessing employee performance involves performance appraisal systems focused on individual evaluations, and managing inventory levels is typically handled through inventory management techniques and software rather than relational frameworks.