In most cases, you create tagged PDFs from within an authoring application, such as Adobe FrameMaker®, Adobe InDesign, or Microsoft Word. Creating tags in the authoring application generally provides better results than adding tags in Acrobat.
PDFMaker provides conversion settings that let you create tagged PDFs in Microsoft Excel, PowerPoint, and Word.
For an in-depth guide to creating accessible PDFs, visit the accessibility page of the Adobe website.
For more information, see the documentation for your authoring application.