Are OAuth2 resources supposed to prompt users for authentication?

I have a dashboard which uses a gRPC resource with OAuth2 authentication. My expectation would be that when viewing the app, I would be prompted for login to authenticate the resource if I don't already have an OAuth token. Instead, I see no such prompt and so users of the app are unable to use the resource.

Based on some hints in the documentation, I've tried setting and un-setting an auth verification endpoint with the following, but with no change:

As a note, if I manually auth with the resource in the resources page, then the dashboard works as intended. I'm specifically looking for it to prompt users for authentication when using the dashboard directly.

Would really appreciate some help on this since the documentation is pretty vague about this point. Thanks!

Figured this out! I just needed to create a custom auth resource on the dashboard and point it to my resource.