In case Principal Entity is a large group with various departments not related to each other, how will the template/sender ID registration will function?

In case Principal Entity is a large group with various departments not related to each other, how will the template/sender ID registration will function?

A Principal Entity is eligible to register multiple headers and multiple templates under each header. Example: For a Principal Entity with different departments, it may register multiple headers for each department and further, multiple templates can be registered under each header.