This rule set up helps to create a Buy one get one for the same Product.
Example: Buy 1 get 1, Buy 2 get 2, Buy 3 get 3, and so on.
You can provide a discount on the selected Category based BOGO deal.
This can be calculated based on the cheapest/highest priced product.
When 2 products of the same category are in the cart then the cheapest product in the cart will be provided a discount.
For more details --> click here