Is your feature request related to a problem? Please describe.
Many organizations expose their capabilities as APIs to external organizations. These are generally referred to as B2B APIs. External organizations who wish to consume these APIs, would need subscribe to these APIs and consume them. As part of the subscription process an OAuth 2.0 client is created in the authorization server. If WSO2 Identity Server is acting as the OAuth 2.0 authorization server in this case, based on the organization management model it has, these OAuth 2.0 clients need to be created inside a B2B sub-orgnanization dedicated to that external organization, due to clear separation of OAuth 2.0 client's delegated management requirement.

Describe the solution you would prefer
It should be as simple as enabling the application management capability in the B2B sub-organization. However, when accessing these applications they should not be treated any different to applications created in the root-organization. They are created in the sub-organization only for the purpose of administration.