I need change Ispconfig so that the user, group and directory of the websites match those of the WebDav, for example for the site hosted on /var/www/clients/client1/web3/web/ with user and group web3:client1, I need that webdav directory to be that and not /var/www/clients/client1/web3/webdav/ with user permissions web3: client1 and not www-data: www-data I basically need the client to upload the site files through WebDav directly into the site directory
That's not possible, webdav runs udner a different Linux user than the site and the change you want to make would open up a real security hole as the site separation won't work anymore then. The site ahs to be uploaded by FTP or scp.