How to send Parallel Invoice Approval notifications for multiple Cost Center Manager hierarchies

Summary:

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We have Cost Center Manager Approvals through Job Level Hierarchy and the Invoice to be approved at the document level by seeking the approval from individual cost center manager's hierarchy per each cost center on the invoice distribution. Please review the example below:

Inv # Test123

Amount = 145000 USD

Line 1

Amount= 50000

Dist Account = 301.6101.5341109.11.0.0.0.0.0.0

Line 2

Amount= 45000

Dist Account = 601.5110.5336302.0.0.0.0.0.0.0

Line 3

Amount= 50000

Dist Account = 201.6750.5315129.0.0.0.0.0.0.0

in above example, segment 2 is our cost center. Now, when we submit the invoice for approval, we wish to send it to the approval for the 3 cost center managers of (6101, 5110 and 6750) concurrently and pick up the document approval threshold from one of the 3 cost center manager's hierarchy.