OAuth application without public URL

Thanks Will,
Just to clarify: in our scenario the sharing part would be handled by our application. Its seems like what we need is a private Oauth app (like unpublished app) which is allowed to work with other user accounts. Please put this request on our behalf to your team.

I am working for Hyland Software, in NilRead image viewer team: https://www.hyland.com/en/healthcare/enterprise-imaging/nilread

I have another related question: I tried to create another Oauth app using my work credentials (evgeny.boguslavsky@hyland.com). I don’t have permissions to submit this app for review, the message says: “For submitting the app, developer privilege is required. Please contact your account admin”. Whom exactly should I contact to get developer permissions on this account?

Thanks,
Evgeny