Use ChatGPT Work to prepare calculation-backed documents from authorized source batches: inventory the pages, transcribe values with locator receipts, reproduce the arithmetic, reconcile control totals, assemble the document, and produce a print or copy manifest for review. It should assist the keying and proofing work, not become the source of a number. The original document and approved calculation rule remain authoritative; ChatGPT must not invent an illegible value, silently correct a source, release a final document, or treat a copied set as complete without a human count. The usage estimates here are projected role-task priors, not measured ChatGPT adoption by bookkeeping clerks, so they support a bounded trial rather than a claim about existing practice.