Custom Options
The extension adds the ability to use the custom options in the cart rule - in conditions and actions.
Custom Options in Product Sub Selection
To add a custom option condition, select "Products Subselection" in the conditions drop down:
In the conditions of the sub selection, click the green plus, and you will see the values "Custom Option title and value" and "Custom Option SKU":
Custom Options in Magento Core Actions
To add a custom option in the core action tab, select one of the Magento core actions in the "Apply" dropw down:
Now, click the green plus in the actions tab: