This sub-menu lists the toolbars that are available in spreadsheets.This overview describes the default toolbar configuration for LibreOffice. If you have customised any of the toolbars, your configuration might differ from the one described here.
The Classification bar contains tools to help secure document handling.
The Classification toolbar contains list boxes to help in selecting the security of the document, according to the BAF category policy and BAILS levels. LibreOffice will add custom fields in the document properties (File - Properties, Custom Properties tab) to store the classification policy as document metadata.
Go to menu View - Toolbars and select Classification