Dynamics CRM 2016 On-premise : Internal client access URLs

I am working on Microsoft Dynamics CRM 2016 on-premise environment with multiple organizations on the same instance.

There are 2 Organizations created.
1. Organization1
2. Organization2

1. External Access - All the organizations are configured for IFD, and both the external urls are working fine.

2. Internal Access -
For internal client access, I want to setup below URLs to access both the organizations.

https://Organization1.<installedCRM>.<Domain>.in/     --> Working fine
https://Organization2.<installedCRM>.<Domain>.in/     --> Not working because it is redirecting to Organization1 URL.

When I access https://Organization1.<installedCRM>.<Domain>.in/Organization2  --> Working fine.

What I will have to do so that internal users can access both the Organizations in the same manner?

Thank you,