If you are running an Instant Agenda type meeting, attendees get to vote on topics so that you can process the most valuable topics first. This type of meeting can be used on a recurring basis (e.g., a weekly leadership session or retrospective). For that reason, it is necessary to clear or "reset" the votes. You may also want to clear your votes if you voted prior to the meeting and new topics have been added.
Undo votes and re-vote using the ⋮ menu that appears to the right of "Current Agenda". Moderators can also undo everyone's votes to call a complete re-vote.
Votes are reset automatically at the end of each meeting session (when the moderator clicks "End Meeting").