How to Modify User Item Type Change Order- Approval workflow using BPM

Summary:

We need to change approval workflow for User Item Type change order as below, without impacting other CO approvals-

 1st level of Approval - TC Warehouse Item Change Order Custom role

AND then 

2nd level of Approval - TC Hospital Pars Item Change Order Custom and TC Hospital INVs Change Order Custom in parallel.

We need BPM rule for configuration.

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