From In-Portal User Manual

This form is designed for adding and editing option properties. The form has the following fields:

• Option Id - internal number of the option (read-only)
• Name - option name
• Required - an option value has to be entered or selected for this option when adding a product to the shopping cart if Required is set.
• Option Type - specifies the option type. When a product"s option selection mode is set to "Selection", the type controls how the option is presented on the front end (product details page). The following option types are available: drop-down, Text field (edit box), Text area (multi-line edit box), Radio button, Checkbox.
• Priority - numerical option priority, relative to other options of the product. The options are sorted according to the priority when displayed on the front end.

The following controls are available only for option types with pre-defined values such as a drop-down, a radio button and a checkbox. The group of controls allows to add/edit/remove option values and adjust their pricing.

• Option Value - textual value of the option
• Option Price - price modifier and its type. The modifier may be positive or negative. The product base price will be adjusted according to the price of the selected option value. The modifier may be applied as a monetary value (indicated by the "$" sign) or a percent of the base product price (the "%" sign). Keep in mind, that the product base price in turn depends on the purchased quantity according to the price brackets. The price field may be left empty - in this case the product"s price will remain the same. For example, the administrator wants to specify the following option values and price modifiers for the "Size" option: Small (-10$), Medium (no modification), Large (+5%).
  To achieve this, the administrator has to enter "Small" into the option value field, set the price value to 10 and the modifier type to "$" and click the "Add" button. Then repeat for Medium without setting a price value and then repeat once again for Large, setting the value to 5 and the modifier type to "%". Added option values will instantly appear in the list box below the fields. To edit an option value the administrator may double-click on it in the list box or select it and click "Edit" to the right of the list box. Similarly, an option value may be deleted by selecting it in the list box and clicking Delete to the right of the box. Option values order may be adjusted by selecting the values in the list box and using Move up/down buttons on the right.
  Please note that option combinations should be revised after editing the option values.