PDFIndexer installation

I'm attempting to install PDFIndxer standalone.
The documentation says:  

download a file called doc_indexer_unzip.zip . The zip file contains two file : com_docindexer.zip (main component) and plug_docindxer_search.zip (the search plugin to search for indexed documents).

The actual downloaded file is significantly different

 <name>Documents Indexer Package</name>
      <packagename>docindexer</packagename>
      <creationDate>August 2021</creationDate>
      <author>Ossolution</author>
      <authorEmail>damdt@joomservices.com
      <authorUrl> www.joomdonation.com
      <copyright>Copyright (C) 2012 - 2024 Ossolution Team</copyright>
      <license> www.gnu.org/licenses/gpl-2.0.html GNU/GPL
      <version>4.0</version>
      <description>Documents Indexer package</description>
     <files folder="packages">
       <file type="component" id="docindexer" >com_docindexer.zip</file>
       <file type="plugin" id="docindexer" group="search">plg_docindexer_search.zip</file>  
       <file type="plugin" id="docindexer" group="finder">plg_finder_docindexer.zip</file>  
       <file type="plugin" id="docindexer" group="installer">plg_installer_docindexer.zip</file>
       <file type="plugin" id="docindexer" group="system">plg_sys_docindexer.zip</file>
     </files>

If I attempt to install the package on Joomla 5/php 8.3, I get a red-box install error with no text.
I also see multiple plugins with dates back to 2008.
Suggestions?
Fred 

Hi Fred,
I wanted to sincerely apologize for the outdated documentation you’ve received. Unfortunately, it has not been updated in some time, and I realize this may have caused confusion or inconvenience.
We understand how important it is to have accurate, up-to-date materials, and I regret that we have not been able to provide that sooner. Please rest assured that we are working on updating the documents and will make sure they reflect the latest information as soon as possible.
Currently, when you install latest Documents Indexer version, there are 4 items will be install
- Documents Indexer component
- The Joomla Smart search Docs Indexer
- The Joomla Installer Docs Indexer
- The Joomla system Docs indexer.
In the meantime, if you have any specific questions or need clarification on any points, please don't hesitate to reach out. I’ll be more than happy to assist you.
Thanks
Dam

Thanks for the fast reply...

The downloaded package contained these four plugins:
\packages\plg_sys_docindexer.zip
\packages\plg_docindexer_search.zip
\packages\plg_finder_docindexer.zip
\packages\plg_installer_docindexer.zip

You stated three plugins to install... which install files match to which plugins?

My guess - 
- The Joomla Smart search Docs Indexer  -   ???  \packages\plg_finder_docindexer.zip
- The Joomla Installer Docs Indexer   -   \packages\plg_installer_docindexer.zip
- The Joomla system Docs indexer.   -   \packages\plg_sys_docindexer.zip

Guidance?
thanks
Fred

Also, what is the cli command to run the indexer?
Thanks!
Fred

Hi Fred,
You can open this page: joomdonation.com/joomla-extensions/joomla-pdf-indexer.html , open tab: TroubleShooting to see the way to setup indexing with cron-task command of server.
By that way, the documents can be indexed automatically.
Thanks
Dam