AP invoice request with HR supervisor hierarchy

Dear Expert,

    

We have scenario where request is department manager/AP Requester once him /her Approved and then it should follow the HR supervisor hierarchy (who is
manager of first approver, so on) We are able get the first approver/department head or line manager, project manager,

   

SELECT 'person_id:'||requester_id

  FROM ap_invoices_all ai

  WHERE ai.invoice_id=:transactionId

  AND ai.quick_po_header_id is NULL

       

Now, How we can get setup as soon as first approver approved how to get second Approver as first approver manager and so on as HR superviory hierchey
in  AME.