Dependency for “Proceed to Checkout” instead

Hi there, I love the idea of this plugin, but I have an issue where I want users to be able to add the main product to the cart, and get told that they also require the dependent product (if not already added to the cart). However, the plugin wouldn’t even allow the main product to be added to the cart if the dependent item is not in the cart already.

Is it possible to change this to “proceed to checkout” instead? So be able to add the main item to the cart, even though a dependent item is not in the cart yet. However the user cannot click “proceed to payment” because the dependent item is not yet added to the cart. I do feel this makes more sense from a practical standpoint.

Hopefully I am making sense here. The reason I am asking for this, is the main product I want users to add to the cart, is not able to be added due to a minor dependent item not yet in the cart. It also doesn’t work with “bought together” plugins, when selecting the main item, and clicking a bought together product, it doesn’t let you add these both to the cart even though the bought together item is the dependent item.