Hello again @stephenstoelinga14!
I’ve been doing a ton of training on Apigee Edge to get up to speed on this for our customers and wanted to pop in again. You are correct that, while Apigee supports the four different OAuth flows, it is limited to the ability to generate and verify tokens and add them to requests. There is no user store.
We’re still working on our Official Guidance on best practices for integration of Auth0 and Apigee, but they do complement each other nicely. Essentially, you’ll first authenticate with Auth0. Then, you can either generate the token with Auth0 or with Apigee and use Apigee to add it to the header of the API request.
One of our employees posted this example on the Apigee Community Forum along with some sample code that should help you until we finish hammering out our official best practices:
Hope that helps. I’ll keep you posted as things develop.