The Document Catalog under Documents allows users with management permissions to change the company name, policies title, modify and add sections/folders, move documents and download documents.
Clicking on a section/folder will open it and display any documents and sub sections as well as display a Options link to modify the properties of that specific section. Clicking on Options will display the following section options, edit the name, add a new sub subsection, move the section, download all documents in the section, delete the section and modify the permissions for that section. Please note that the option to delete is only possible if the section is completely empty.
The section permissions is what controls adding of documents (Write), viewing the section (Read) and manage and modify the section (Setup). Add a group of users and/or an individual user to the section permissions to allow access to the section.