Decide who has the right to decline
For a film night, list titles everyone considers acceptable, then vote on which to watch. Someone who does not want to watch can opt out. For a shared service that costs each person money, a vote alone cannot authorize taking money from the person who declined. Separate choosing an activity for willing participants from committing resources, information or labor that belongs to an individual. State the decision rule before collecting preferences.
Give objections a practical consequence
Say how people can object and what an objection changes. Someone with an early shift can decline a late film without preventing others from watching. The group may still choose the film, while the individual keeps control of their own participation.
Use a reversible example when introducing the rule
Try the process on a low-stakes weekend activity. Three adults might agree to choose between a walk and a game by vote, with anyone free to sit out. If the walk requires one person to drive, ask that person separately before treating the winning choice as possible. Record the selected activity, who is joining and who accepted any supporting job. A clear method makes disagreement manageable without treating a vote as permission to assign someone else’s work.