Document sections allows you to split a document into separate sections to enable different page sizes, margins or headers and footers. Since version 15.0, page columns can be adjusted separately for each inserted section.
When you are not used to word processing, sections might not be self-explanatory. For instance, sections enable users to create documents with mixed page orientation, so that parts are inserted as portrait and other parts as landscape. It is possible to add different headers and footers to specific sections or to include page numbering only for the main part of a document and omit it in an appendix.
Accessing Document Sections
The Page Setup Dialog