Parent Child Question in Address Book

Hi Community,

Can anyone say what are the differences between the Parent Child setup for Customers and Suppliers in JDE eg I I have heard that in the Supplier ledger the records cannot be viewed by the parent level although Parent Child relationships can be set up at an organizational level. Can anyone cast some light on the differences / functionality of Parent Child between Suppliers and Customers and is there a document out there that willl highlight the differences.

thank you