one sold to party, multiple ship to, bill to and payers

Hi all,

My requirement is that one sold to party should have three ship to, two bill to, and one payer. In sap partner determination how we have to configure this, can we use single account group and also tell me step wise process. Also want to know that can we change partners at sales order level, if so what settings we have to do and how this can be done at order level

Points assured for benificial answers.

Sunanda.P