How to install a second org-roam directory
In order to get a second org-roam database configured I needed to add a
.dir-locals.el file to the folder where I keep my notes. In my case - content/notes in my git repository.
This is the content of the file:
((nil . ((org-roam-directory . "~/second-directory/location/"))))
This file lets emacs know that this folder is an org-roam-directory.