This new feature allows you to create relationships between your Product Attributes so that you can manage what attributes you want to display to the user based on other attribute selections.
To apply logic to specific attribute click, first you need to enable the feature:
Configuration > Settings > Catalog Settings : Admin.Configuration.Settings.Catalog.EnableProductAttributeDependencies
Then navigate to:
Catalog > Products > Product Groups > Attributes
Here you will notice a column in the attributes grid called ‘Attribute conditions’. Click on the corresponding ‘Add Logic’ button in the table to the attribute you want to apply logic to. This will then create an area for you to build your statement which consists of a parent attribute, a selected value of the parent attribute and a child attribute.
e.g. If Attribute1 has a selected value of Value2 then show Attribute2.
If the product group 'Attributes' is not available to you or you cannot see it, you can create a new group by clicking 'Add New' and filling in the information as necessary.Once you have finished setting up your product group, you'll want to click 'Save and Continue Edit'.
Three new tabs will appear alongside a list of all your products at the bottom of the screen. In order for any logic you create to affect your products you must add those products to this group. This is done by double-clicking on the checkbox next to the appropriate products, clicking the green 'tick' at the top of the list and clicking either 'Save' or 'Save and Continue Editing'.