Credit Management Approval-Reg

Hi,

I am in a implementation of SD. where in we have credit management is activated. Here the requirement is like as follows:

Client Wanted the three approval Hierarchy Like Credit Control Manager, Finance Manager & Managing Director.

These three levels will have the certain limit. Like Over all limit to Customer is

$ 20000/-

Credit Control Manager : $5000

Finance Manager : $5001 to $15000

Managing Director:$15001 t0 $20000

Can we have the above mentioned way to know the appoval process for Credit limits.Can any one list and provide the solution to my requirement.

Thanks & Regards

Srinivasa Rao P