Check what decisions the person at home may face
A technician may ask whether they can move a heavy appliance, replace an unexpected part or stay past the original window. Before choosing an attendee, ask who can answer those questions and whose agreement is required. Someone working from home may be physically present but unable to stop a private call. Protect a genuine window for opening the door, describing the fault and hearing the proposed next step.
Agree what the attendee can authorize
For an appliance visit, give the person on duty the model, the reported fault, the approved spending limit, and a contact for unexpected work. If the technician proposes an extra repair above the limit, the person can pause and get a decision before signing.
Pass on the result rather than a vague “all sorted”
At the end of the visit, ask for the work completed, any part still needed and the reference for a return visit. Leave a brief note for the other adult. “Technician found the fault; part ordered; estimate coming Thursday” tells them what is still open. Record separately what the technician said about using the appliance while you wait. If the attendee had no authority to approve extra work, record that it was proposed, not agreed or paid for.