Submission packets often come together from different sources: a form, a scanned ID, a receipt, a certificate, and a signed page. If the order is wrong, the reviewer has to work harder and may miss something.
Before uploading, put the pages in the order the recipient expects. Remove accidental blank pages, rotate sideways scans, and keep supporting documents grouped together.
Organize Pages gives you a page workspace so you can reorder and rotate visually before downloading the final PDF.