One index is usually enough, but when you need more, use these two tricks to generate exactly the indices you need. The February 2015 article How to add an index to a Word document using index tags ...

In Microsoft Word, a user can insert a bookmark into a Word document. Bookmarks are inserted into a document to identify information that you want to return later. In Word, the user can move to the ...

If your TOC has missing bookmarks; you might have deleted them accidentally. Many users get this error when using an automated TOC. The bookmarks are outdated. There ...