You can access the Services media library from the Media tab.
Editors and Administrators can add files and delete media. Other people can only view media and files.
Tap Media on the bottom navigation tab, and then tap the menu to choose a media type from the list.
Media cannot be added on the mobile app, but once it's added in the Services web, Editors and Administrators can add files from their mobile device.
To add a file to a media item, tap Add a File, and then choose the file to attach to the media.