8.4.1.3 Customer-directed sources (also known as "Directed-Buy")

Hi all

I have problem with the meaning of clause 8.4.1.3 title: Customer-directed sources (also known as "Directed-Buy")

I do not understand the meaning of the terms “Directed-Buy” and “Customer-directed sources” in the title. I would be so grateful if someone explain me which of my following definitions are correct or what are the right meanings:

1. Directed-Buy means “ordered-buy” because the customer has obligated/ asked/required the organization to buy from the customer-specified supplier.
   
   
2. Customer-directed sources means “ customer-ordered/required sources” because directing means ordering or requiring.
   
   
3. Customer-directed sources means “ customer-selected sources”.
   
   
4. Customer-directed sources means “ customer-managed sources”.
   

Thanks all