There are many posts on this subject, none of which seem to correspond with the latest version. One can use existing suggestions to make hidden files such as .htaccess or .htpasswd visible on the remote server, but the same trick does not seem to work for local files. For the pundits who immediately leap into action with comments along the lines that MacOS has the option to show hidden files, indeed it does, and that option is switched on. I can see the hiddewn files in Finder. It is just that I cannot see them in the local file liston Dreamweaver which of course means I cannot PUT them onto the remote server.
It is very annoying and very difficult. Sure I went off and tried Wappler but it is not fit for purpose, and impenetrable with jargon and etc. So no, I prefer to stay with DreamWeaver and would appreciate prompt action from Adobe, or help from users who have experienced the same difficulty and solved the problem.