How can I make a copy of any board?
To make a copy of a board, open the Board Details for the board. Click on Actions located at the upper right corner of the Board Details window. Choose Copy board.
A copy of the board with all cards will appear in the main folder of your Google Drive and will be opened next to the original board with the prefix Copy of. If you choose an option Copy board layout, no cards will be copied, but only board layout (list names and board settings).