Apologies again for being dense, as well as impatient.
I decided again to start over from scratch. I uninstalled the WP module, then uninstalled Bitnami completely.
I then reinstalled the Bitnami WP stack. It works as expected.
At that point I started to install the WP module.
It asks for the location of the previous Bitnami installation and I give it the Bitnami root folder: N:\Bitnami. After entering the rest of the info, when it starts the installation, it stops and tells me that "The installer detected that the installation folder N:/Bitnami/apps/wordpress is not empty" and that I should either uninstall the older version or risk corruption of the current one.
Here's what I don't get: The module requires a previous installation of Bitnami, but it gives a warning when it finds the previous installation.
Each time when I have proceeded to install the module anyway, what happens is, the existing blog's blog name is changed to the name specified when installing the module, and there is an additional Hello World post (and associated comment) created, but the first installation appears otherwise unchanged.
Having done this several times now, I still haven't found a clear explanation of how to actually get a second fully independent instance of WP installed on the same stack.
The steps and instructions always contain some ambiguity, like how the module requires a preexisting installation, but complains when it finds one.
I have no doubt this can be done, and I have no doubt I'm capable of understanding how it works, but so far following the steps provided is not getting it done.