Archive, Delete or Restore documents

Documents that are no longer valid or required can be archived. Once archived, documents are no longer visible in the document list, and won’t appear in search results.

Note: 
Only Promasters A Nintex Process Manager system administrator who administers a Nintex Promapp site and has rights to view and edit all areas of a Nintex Promapp site. and document owners can archive a document, and only if it’s not associated with a process.
If a document is still part of a process, you will need to edit the process and remove the document. Once the process is published, the document can be archived.