Worflow flexible for credit memos.

Hi,

I request to instrumentality flexible workflows and I person a problem.

I person respective steps:

1. Net worth bigger than 5000

2. Net worth bigger than 50000: Here I person 3 approvers and the 4th 1 that is an circumstantial user1.

3. Net worth bigger than 100000: First 3 approvers are the aforesaid than successful the erstwhile level, but the 4th 1 is different, circumstantial idiosyncratic 2. 

I don't cognize however to debar the circumstantial user1 successful lawsuit the nett worth of the recognition memo is greater than 100000.

Thanks