What are conditional drop-down lists?
Conditional drop-down lists are lists which items change depending on another field value. For instance, let’s say you have a “Product” field and a “Product option” field. You want the drop-down list of the “Product option” field to be listing only options related to the product specified in the “Product” field. With Advanced Drop-down Lists, you may create different lists for each product and each list will be displayed only if the corresponding product is displayed in the “Product” field.