I use a Kanban board to manage files, and I want the system to automatically add the current date and time to a Trello card whenever it's moved from one list to another list. This timestamp should be visible on the card. The board functions as a check-in/check-out system, ensuring that no two people open the same file simultaneously. To do this, users compare the timestamp on the card in the "Bull Pen" list with the file's last saved date and time. If the timestamps don't match, they avoid opening the file.