shipment to AR invoice scenarios

 Hi Gurus,

We have different types of scenario for creating AR invoice against shipment in O2CASH:

1)1 sales order= 1 shipment= 1invoice

2)1 sales order=2 shipments=1 invoice

3)1 sales order=2 shipments=2  invoice

4)1 sales order=5 shipments=1 invoice(for 2nd,3rd and fourth shipment)

5)2 sales order=2 shipments=1 invoice

6)2 sales order=multiple shipments=1 invoice for selected shipments

How we can achieve AR invoice as per above scenarios?