This document is designed to explain how to build a multi-tenant integration with Okta for a mutual set of customers. OIN integrations are not meant to be internal. This is for multi-tenant on the Okta side and Auth0 side.
The section on multi-tenancy explains that there is a different set of OIDC credentials (client id and secret needed for each Okta org you’d like to act as an identity provider.
Does this make sense?