Hi guys,
the Joomla Business Directoryt documentation is great but I miss the same docs for Joomla as Wordpress about how overrides work in Joomla Business Directory and how you could extend Joomla overrides layout for Joomla Business Directory.
This is the section for Wordpress that is missing for Joomla.
https://www.cmsjunkie.com/docs/wp-businessdirectory/language.html#tailoring-layouts-with-confidence
Hope you have some time later to update it for Joomla as well.. its a lot you can do with Joomla overrides :)
Cheers!