The purpose of this option is to allow for custom suffixes based on the app block being used. It allows for the easy creation of specific brand pages e.g. by gender, where existing product search filters support by in link parameters.
This is in addition to the universal quick link settings within the app and also applies to collection mapping.
Example:
Adding '&gender=mens' to this field will result in all brand links on the page/slider/icon getting this suffix.
http://storename.com/collections/brandname
Will become
http://storename.com/collections/brandname&gender=mens
