How is the most effective way to classify forms in a functional forms file or index?

Classifying forms by the subject to which the form applies is highly effective because it aligns the organization of the forms with the functional areas or topics they serve. This method allows users to quickly locate the information they need based on the context or subject matter, rather than on administrative details like department or form number, which might not be intuitive.

When forms are categorized by subject, it becomes easier for staff and analysts to find relevant materials when they're addressing specific issues or inquiries. This approach enhances usability and accessibility, ensuring that individuals can efficiently navigate through the index or file without needing to memorize form numbers or departmental nuances.

Additionally, a subject-based classification fosters a more logical structure, as users can group forms related to similar topics together. This not only streamlines the search process but also aids in managing and updating the forms as organizational needs evolve or new subjects emerge.