In some scenarios, you may need to take off an amount based on a modifier chosen. Such as “No Side” for $1.00 less than the menu item. The negative price sums into the menu item price; it does not show it as a line item.
Example: Rice Bowl at $8.00, No Rice= -.60, Rice Bowl= $7.40
You will create this modifier the same way you create a regular modifier, except instead of a positive value, enter a negative in of the value such as -.60 for $.60 off the menu item price.