Use a practice space or read-only setting
Write “Practice only: show how you would plan a sample book pickup. Do not save anything.” Check the task list afterward. If a real task appears, remove the sample carefully and review which permission allowed it before trying the workflow again. A prompt saying “practice only” communicates intent, but it is not an access control. Use an isolated test household for a rehearsal that may create records. If no writes may occur, use a read-only session and disconnect external destinations that could act on the example.
Make the example unmistakable
Name the record “Practice book pickup” and avoid real dates, real household names and genuine addresses. Ask the assistant to describe a proposed change step by step. Compare its answer with what you wanted it to demonstrate before moving the exercise into a real household.
Check for side effects
Inspect task lists, calendar entries and any permitted external destination after the rehearsal. If a real item appeared, identify whether a write permission or an approved action caused it. Remove the practice item through the normal controls and narrow the permission before repeating the demonstration.