Create Plex Virtual Libraries by adding "VL-" tags to Plex movie's sharing dialog.

You will need to manually edit the VirtualLib.txt file to update the path to your com.plexapp.plugins.library.db file.
On Windows this can typically be found here: C:\Users\<user>\AppData\Local\Plex Media Server\Plug-in Support\Databases\com.plexapp.plugins.library.db
You will also need to create a VirtualLib folder and update the path in the VirtualLib.txt file.

Requires SQLite:
https://sqlite.org/download.html