People need to know how to organize and manage them.
How do you get them all into a single file? These questions are all the more pressing for people working from home and those trying to go paperless because PDFs easily replace physical documents. Or maybe you have four or five sections of a report that you've printed to separate PDFs from Word, Excel, and a photo editor. You don't want to inflict a half-dozen PDF files on the accounting department, for example, when you can deliver one unified document. Knowing how to combine multiple PDFs into a single file is easy and can make you more productive.