A statement of work is uploaded to the document section of a project as reference...

When uploading reference materials, such as a statement of work, to a project in Adobe Workfront, it should be uploaded as aDocument. The "Document" option is appropriate for files intended to serve as reference or informational materials within the project. Documents in Workfront allow users to access, share, and manage files related to tasks, projects, and issues.

The "Proof" option is used for files that need collaborative reviews and feedback, such as marketing materials or design files, where multiple stakeholders need to comment and approve. "Approval" refers to a specific status for documents or tasks requiring formal acknowledgment or acceptance but is not directly tied to the method of uploading files​​.