Editing Existing Boards & Cards
If you would like to edit an existing board, you can do so by navigating to the board you wish to edit and clicking the 'Edit' button, this will present you with the same screen you had when initially creating a board.
Editing & Deleting Specific Cards
You can edit or delete specific cards in a board by hovering the card; at the top right of the card are options to either edit or remove the card.
