How to create Release Strategy for P.O.

Hi All,

I have some urgent help regarding : How to create P.O release strategy with the following requirement-

The Purchase Order will be divided into two levels for approval:

I) Purchase Order with value from $100,000 to 999,999.99 will be reviewed by a supervisor

II) Purchase Order from $ one Million and above will go to – Supervision and then go to Dept. Mgr. for approval.

I would appreciate for yuor help.

Can we do it at item level or i need classification?

Pl. help.

Thanks,

Jai.