How to inherit ACL's/permissions automatically when creating new folder using Finder?
By default, Active Directory objects inherit ACEs from the security descriptor located in their parent container object. Inheritance enables the access control information defined at a container object in Active Directory to apply to the security descriptors of any subordinate objects, including other containers and their objects. This eliminates the need to apply permissions each time a child object is created. 

If necessary, you can change the inherited permissions. However, as a best practice, avoid changing the default permissions or inheritance settings on Active Directory objects. For more information, see Best practices for assigning permissions on Active Directory objects and Changing inherited permissions.