Having rummaged around in the dehydrated docs, my best guess is that I need to add an alias to Apache in the alias.conf mod to the tune of:

Alias /.well-known/acme-challenge /var/www/dehydrated

Am I on the right lines?

Also, if I change dehydrated settings will that break the Confconsole method (not a major issue now but I may wish to use it in the future)?