This illustrative workflow is for a small business preparing documents for an invoice reviewer. It is not a customer testimonial or a measured result.
Gather the required PDFs
Keep the invoice, purchase order and receipts as separate originals. Check that each document belongs to this approval request and that you have permission to share it with the reviewer.
Arrange the pack
Open Merge PDF, choose the first PDF and use Add PDFs / Merge to add the supporting documents. Arrange pages in the reviewer's requested order. Use the thumbnail controls to move, rotate or remove pages. Check the joins between documents for duplicates or missing pages.
Check the saved copy
Prepare the export, sign in if prompted, and save the combined PDF. Reopen it and check reference numbers, dates, page count and recipient. Test any links or form fields that matter; editor exports may flatten or omit interactive features. Keep your originals.
Use the CLEAR document check before sharing. For separate recipient packs, see splitting and extracting pages.