Google Chrome security warning: Your connection is not private

Consider visiting a website that have a expired SSL certificate. Google Chrome (Version 102.0.5005.115, Windows 10) presents a warning:

NET::ERR_CERT_AUTHORITY_INVALID

However, I trust the sites as another web service builds these for me.

How do you adjust Custom level Internet Options only to remove this security warning?

I don't want to "fix" the certificate problem, I want to "whitelist" some websites thru Internet Options. Again, I don't know what store the certificate or the chain. I think that Chrome just browses the "Internet" and Internet Options allow me to edit rules regarding the "internet". my main goal is to make the custom level only let through sites with SSL problems and certificate problems, albeit the title could be changed. Oh, the screenshot was only to highlight the position of the "Custom level..." option, from a blog post some where else.

How do you adjust Custom level Internet Options only to remove this security warning?

You don't. There isn't any setting that would remove this security warning. The only way to avoid it is to import the website's certificate into the browser's "trusted certificates" store.

I think that Chrome just browses the "Internet"and Internet Options allow me to edit rules regarding the "internet".

The "Internet Options" panel isn't really an Internet options panel – it's the options panel for one specific HTTP client (Microsoft WinHTTP), one specific TLS library (Microsoft SChannel), and one specific HTML renderer (Microsoft MSHTML), i.e. it mostly controls components of the Internet Explorer browser.

Almost nothing you do there affects other browsers, most of which bring their own HTTP and TLS libraries (not to mention HTML renderers). For example, Google Chrome uses BoringSSL as the TLS library and doesn't really care about IE settings at all.

Actually, trusted certificates are practically the only exception to this – Chrome does use the certificates provided by SChannel and managed through this control panel. You're looking for Content → Certificates which has a section "Trusted Root Certificate Authorities". Visit the website, export its certificate to a file, then use the control panel to import it into "Trusted Authorities".

(Though it's more common to do that through certmgr.msc rather than "Internet Settings", but both really manage the same list.)

However, I trust the sites as another web service builds these for me.

The warning isn't really about whether you trust the sites, at all. The point here is that the browser doesn't know whether it is connecting to the intended site in the first place, or whether it's being rerouted to somewhere else.