I did read in the FAQ the question:
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Q: Can I skip the dynamical update determination during downloading/installation in order to use my statical definitions only?
A: Yes.
To avoid dynamical update URL determination during download, add "skipdynamic=Enabled" to the [Miscellaneous] section of your UpdateGenerator.ini file.
To avoid dynamical update ID determination during installation, set "skipdynamic=Enabled" in the [Installation] section of your UpdateInstaller.ini file.
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So I would set "skipdynamic" in the UpdateInstaller.ini file, but where exactly would I add the list of approved updates? I think the word "statical" in the FAQ is what is confusing me, as it would seem to imply that I'm looking to install static updates, and I'm not (at least as WSUSOU seems to define "static" updates).