Level 1:

Purchasing → (Putih) → HRD

Level 2:

Purchasing (Quotation) → PR→ Penawaran Harga→ Purchasing (PO) → Sales → Supplychain→Production → Distribution

Level 3:

WH Released (Invoice) → Yes/No → Purchasing Sent (Report)/Warehouse→Accounting → Cashier → (Merah)