Invoice Approval Rule Setups via BPM worklist

Summary:

We have set up Expense Approvals using BPM worklist Administration.
Starting the same on Ap Invoice approvals but see that we cannot edit the rules in BPM worklist

BPM Worklist > Administration > Task Configuration
Task FinApInvoiceApproval
Click Assignees Get message:
Use the Manage Workflow Rules in Spreadsheet task to configure the rules for Payables Invoice Approval workflow.

According to FAQ - Payables Invoice Approvals Workflow ( Doc ID 2641736.1 ) Q2 there are two ways to configure rules.
Spreadsheet - Navigate to Setup and Maintenance > Search: Manage Workflow Rules in Spreadsheet
BPM Worklist Task Configuration - Navigate to Setup and Maintenance > Search: Manage Task Configurations for Financials