How can we bring approver manager in the BIP report

Summary:

Currently our approval process is if amount =<5000 it goes to director at level X, and if amount more than 5000 it goes to VP approval till level Y. Manager comes no where here but when we developed report BPM table few approvals where missing which raised few days back and few cane with manager name instead of approver. Could anyone please let us know how can we bring approver name?

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