1) Select an item in the menu
2) Press on an item in the sales list on right hand side
This will highlight it blue and open the Item Modifier screen
1) Press Quantity tab
2) Enter the desired quantity of this item
Add Options:
1) Press Options + tab
2) Select the options to be added to this option
Add Sides:
1) Press Sides tab
2) Select through the menu to add side items to this item
Change Price:
1) Press Change Price tab
2) Enter the price required for this item