When using a desktop computer that does not have a touchscreen users will need to use a Numeric Keypad.

Numeric Keypad Compatibility

No touch screen? No problem. Use a numerical keypad to close items and orders.
/ = Page Left
* = Page Right
Keys 1-8 = Select Orders
Keys 0 = Deselect Orders
Enter = Close Order/Close Items
+/-  =  Select Items (After Order is Selected)
Key 9 = Full Screen Mode
. = Change Between Order in Progress/Order Completed Screen