dotCMS folders and file assets are managed from the Site Browser tab. The dotCMS Site Browser page is broken up into two main sections - the Sites and Folders directory hierarchy and the Site Browser detail section. Clicking on a folder in the Sites and Folders directory tree reveals the contents of that directory in the detail section. For more information, please see the Site Browser documentation.
All File Assets and Pages are created from the Site Browser tab. For information on Adding File Assets from the Site Browser tab, please see the Adding Files and Adding a Page documentation respectively.
For a fast and convenient method of uploading multiple files, please see the Upload and Edit via Webdav documentation.