Hi Multallim,
Glad to help you here.
Multi-tenant management offers a unified form of management that allows Microsoft 365 partner admins the ability to administer all the tenants they manage from a single location. If you're a partner who manages multiple tenants, you can:
- Move quickly between tenants you manage.
- Assess service health, products, and billing across multiple tenants.
- On the All tenants page, you can quickly see the health of all your tenants' services, any open service requests, your products and billing, and the number of users in that tenant.
Also, please refer to: Manage multiple tenants - Microsoft 365 admin | Microsoft Docs, Microsoft 365 inter-tenant collaboration - Microsoft 365 Enterprise | Microsoft Docs.
Hope that this answers your concern. If you have any questions about this issue or I misunderstand your meaning, please feel free to reply and I will answer for you. Thank you very much.
Regards,
Rebecca