You can offer additional options related to an Item beyond quantity/inclusion. Examples include colour, size, material, etc. These selections can modify the price of the base Item, which is discussed below
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Multiple options may be added, and within each option, multiple available values. When there are more than 6 available values, they will be displayed in a drop-down box instead of a list, unless the Allow Multiple Selections option is enabled, in which case a list of checkboxes is displayed.

The amount for the available values can be either: (a) flat price, (b) % of the base price, or (c) % of the base price + previously selected options.

When there are multiple options, they can be sorted by dragging and dropping.