Simply place your finger on the line item , then swipe to the right . By pulling to the left, five options will appear . You can select the minus option to decrease the quantity on the line item chosen. By selecting the pencil option , this will allow you to edit the line. Selecting the X , this will allow you to delete the line. Selecting the circle, this will display the info about the line if the order was sent to the kitchen printer as an order( restaurant only). The last option allows you to change the status of the line item (restaurant only).