PO Approver - Document Wise

Hi

We are using PO Release strategy and its working fine. Now Our business requirement is different as below

Purchase Order Released by Capex PO type Other Purchase PO Type

Below 5 Lacs Mr D No Yes, with Limit

From 5 Lacs to 20 Lacs Mr S No Yes, with Limit

From 20 Lacs to 50 Lacs Mr M Mr M Yes, with Limit

From 50 Lacs and 1 cr Mr A Mr A Yes, with Limit

Above 1 cr MR F Mr F Yes, with Limit

So, please guide how to do this ?

Ram