Creating the Use Case Diagram: 1. Use Case: Create a use case called "Borrow Material." 2. Actors: Add two actors - a "Patron" (on the left) and a "Library Clerk" (on the right). The Patron initiates the use case. 3. Associations: Draw a unidirectional association (a line bent to the right) from the Patron to the "Borrow Material" use case. Draw an association from the Library Clerk to the "Borrow Material" use case. 4. Other Use Cases: Add two more use cases - "Returned Material" and "Apply for Library Card." Later, you'll add "Place Hold." 5. Associations for Other Use Cases: Connect the actors (Patron and Library Clerk) to these additional use cases as needed. 6. Crowded Diagram: Keep in mind that some associations will involve both the Patron and Library Clerk, which might make the diagram slightly crowded. Adding Attributes: 7. Attributes for Patron: Right-click the "Patron" actor and select "Open Specification" or double-click the Patron actor. Display the "General" tab and add attributes for the Patron, such as "Card Number," "Name," and "Address." Note that in a real system, you might have more detailed attributes like "Title," "First Name," "Middle Initial," and "Last Name." 8. Attributes for Library Clerk: Similarly, add attributes for the Library Clerk, such as "Employee Number" and "Name." 9. Documentation: You can also add some documentation or notes about the Patron actor, like mentioning that there are two types of patrons - adults and children. In essence, you're creating a visual representation of how actors (Patron and Library Clerk) interact with different use cases (actions or functionalities) in a library system and specifying some essential attributes for these actors. This diagram helps in understanding the roles and functionalities within the system.