You set up your OpenID Connect application inside the Okta Developer Console:
- From the Applications page, choose Add Application.
- On the Create New Application page, select Native.
- Fill-in the Application Settings, being sure to select "Resource Owner Password" as one of the allowed grant types, then click Done.
- On the next screen, in the "Client Credentials section", click Edit.
- Select "Use Client Authentication", then click Save.