I recently started developing for Odoo and have created a few modules, but I'm having difficulty figuring out the structure for accounts, customers, and partners.

I'm trying to adapt one of our current applications in which it's Accounts>Customers> and Accounts>Billing accounts. I basically what to add a tab to the customer creation view called billing accounts. Problem is I can't figure out what is tied to what. It looks like it's Partners>Accounts>Customers or Sales>Accounts>Customers.

Thanks