walau93

I have set up 3 configurable options on my main product. For example, each of the feature, I use "Yes/No" option to activate or deactivate so i could get 7 combinations, such as { 1, 2, 3, 1,2 1,3 2,3 1,2,3 } Here come my expectation: In the order form, the customer is required to choose minimum 1 configuration options, in order to proceed with order checkout. How to validate this condition while using custom hook?