I'm in the process of deploying chromium. I would like to deploy a few settings for all users. With another extension (uBlock) this is documented. I have this working with chromium and this extension.

Is there a way to set some settings for chromium-web-store? I would like to disable automatic updates, and ignore an extension.
At the moment I have a registry setting that installs this extension from a local file. Maybe this only works for a new profile, but this does not matter to me. I have tried using update_url, but couldn't get it to work. So now version 1.0.2 is installed from local, a newer version is available, but updating this does not work.

Some context:
working (with 32-bit redirection, so there is some SYSWOW64 stuff in there!):

[HKEY_LOCAL_MACHINE\Software\Google\Chrome\Extensions\ocaahdebbfolfmndjeplogmgcagdmblk]
"path" = "c:\program files\Chromium extensions\Chromium.Web.Store.crx"
"version" = "1.0.2"

not working (this also does not work for uBlock, which uses the standard update_url):

[HKEY_LOCAL_MACHINE\Software\Google\Chrome\Extensions\ocaahdebbfolfmndjeplogmgcagdmblk]
"version" = "1.0.2"
"update_url" = "https://raw.githubusercontent.com/NeverDecaf/chromium-web-store/master/updates.xml"

For uBlock I can set settings like this (don't copy this as a reg file, this is from the script I work with):

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Chromium\3rdparty\extensions\cjpalhdlnbpafiamejdnhcphjbkeiagm\policy]
"adminSettings" = '{"userFilters":"! Disable Strict blocking\nno-strict-blocking: * true\n\n"}'

This last thing works.

Now is there something like that possible/available for chromium-web-store which sets the options of the extension itself?