On Option Variant Required Product

Hi,

When the visitors tick a certain option-variant of a product (radiobuttons), I need another product to be required. Is this possible? Any suggestions?

Or is it possible to make the modifier of that product-variant a one-off price instead of modifier for each product in quantity?

Any suggestions?

When the visitors tick a certain option-variant of a product (radiobuttons), I need another product to be required. Is this possible? Any suggestions?

You can create cart promotion with the following rules

Condition: products - in - product with required options

Bonus: free products - required products

Then add cost of the required product to product combination price

When the visitors tick a certain option-variant of a product (radiobuttons), I need another product to be required. Is this possible? Any suggestions?

You can set up price for product option combinations with our Combination Prices module