Where can I find the Network Identity preference?

I want to enable LibreOffice (on both Linux and Windows) to use Kerberos/SSO (in conjunction with a CMIS link which requires authentication). I found the help page for Network Identity but I cannot find any settings reflecting the description. I already checked LO’s options, esp. the security point.

Did I missunderstood the help page? Are there any Kerberos/SSO related settings? How can I enable Kerberos/SSO otherwise?