Creditmemo approval process using AME from iReceivables

We are Using AME for generating Credit memo from iReceivables.

In the process of setting up AME for credit memo we have done setups for following transaction types:

• Receivables Credit Memo Collector 
• Receivables Credit Memo Approval Chain 
• Receivables Credit Memo Receivables.

Approval Path - Limits only.

When we generate a dispute from iReceivables, the credit memo request is going through all the three transaction type's and looking for three approvers i.e., (Collector, Approval Limit & Receivable User).

Is there any way we can skip one (or) two layers of the approval process?, if this is possible please let us know how to do it.