Select the number of players in the game and enter their initials in the appropriate boxes.
If you enter 2 players only, the sheet assumes that you are playing with the standard two player rules of having 4 of the cards distributed on the board and automatically generates another column for these "board" cards.
You can click on a suspect/weapon/location to highlight it, e.g. to indicate it's a card you've already shown.
Undo and redo buttons across the top of the page.
Reset button at the bottom of the page.