Human virtual assistant or AI assistant? How to choose task by task

Independent outsourced-service working aid. Adapt to the actual agreement; not a universal legal contract.

Workflow and required completed state:
Inputs and authoritative sources:
Fixed-rule steps:
Interpretation or drafting steps:
Decisions requiring human authority:
Proposed human, AI and automation responsibilities:
Permitted tools, data and account access:
Evidence attached to each result:
Approval point before sensitive actions:
Blocked-case owner and failure notification:
Representative test cases and acceptance criteria:
Actual owner review time and correction burden:
Change that would justify expanding or reducing automation: