New work can arrive at any time, plans can change, and requirements can be updated. When change happens, do the following: Write note cards for new items. Reorder the backlog to account for changes in priorities or to slot in new items. Leave items already in work alone, except to edit them if their requirements have changed. Even though priorities may have changed, there’s usually no reason to abandon work in progress. Newly prioritized work will move into the flow in less than a week. That’s because work in progress is limited, so waiting time is short. In the rare event that new work must commence immediately, you can move active cards to a Track column and free up space for the new items.