Two responder win the approval for AP invoice approval

Summary:

We have requirement from business, where they have to approve invoice with certain amount as under,

Invoice Amount between- 1,000,000 USD to 5,000,000 USD

First It should approve by the job level 70 then

It routed to approval group consist of 4 people (CEO,CFO,CCO, General Counsel)- Once any two member withing group approve the invoice- it should complete the work flow and make the invoice approval status as "APPROVED". So here, Basically , we are expecting two responder wins the approval.

Do let us know how to achieve this requirements?

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