subcontracting with slaes order

hi i want to know

how can we do the subcontracting with sales order

i got a process using 311 e movemnt when i search on SDN

plz let me know if this process is correct how can i have subcon challan

Subcontracting scenario(Sale Order wise)

Subcontracting For Sales order.

Subcontract Account assigned PO

how can i create storage loc as vendor

plz help

regards

raj