SAP S/4HANA cloud BPM and Testing alignment

Hello. We are implementing SAP S/4 HANA cloud.

1. If we are using Excel to map business processes Level 0 to 6 what is the process hierarchy Header Title per level?
2. If we are using Excel what is the best way to align the Business Process Master list (BPM) of processes to the scope we need, test scenarios, test cases and test steps?

We are not using the SAP Activate methodology or SAP Solution Manager.