This page is about Upload by users thanks to PhpWebGallery screens. You must not get confused with directories and files managed by the administrator thanks to FTP or locally.
To let users upload their pictures, follow the instructions :
chmod 777.You understand that upload permission is given category by category and does not depend on the user.
In order to prevent from stupid behaviors, files uploaded by users are not directly visible on the website. They must indeed be validated by an administrator. For that purpose, an administrator must go on [administration panel » Pictures » Waiting] to validate or to refuse the files proposed, then to synchronize filesystem with database.