You can add new documents through Documents → Add New Document in the WordPress Administration Panel.
Documents contain most of the same options as standard posts. You can read about these in the Add New Post chapter. Additionally, they contain post options specific to documents.
Document Options are found below the editor on the Edit Document page. If the Document Options are not visible, make sure they are checked inside the Screen Options area at the top.
If you are adding a new document, make sure you have saved the post before editing document options. Otherwise, the document options will not be visible.
Select the sidebar position. Choose No Sidebar for Full- width page.
This is where you upload the document. It must have a
Add the size of this file, in any unit, such as KB or MB, for example 1.45 MB.
Document Pages (For ex: 220 Pages)