I am using ODOO Enterprise version 12.

How can I set price lists by using parent categories so that the rule applies to all child categories, unless another rule is made relating to a specific child category of the parent category?

Parent Category: Beer

Child Categories:  Beer/IPA

Beer/Porter

Beer/Stout

I want to use the Parent Category of 'Beer' to apply a price discount to all of Child Categories.  In the event that the discount does not apply to Child Category 'Beer/Stout' I want to supersede the original rule with a separate rule and not apply the discount for 'Beer/Stout'