There are many situations in which you would like to provide your users with the ability to search through a list and select the right value. The filtered drop down helps you support this by adding a drop down with built-in search capability along with support for very long data. To illustrate this I am using zip code data from the United States Postal Service.
1. To access this functionality drag and drop a “Filtered dropdown” widget to the advanced product editor spec customization screen
2. Name the drop down and click on the edit (pencil) icon for the item
3. In the list you can specify a few entries manually or copy a long list from an excel spreadsheet.
4. On the user side, when a user clicks on the drop down it allows them to narrow the list by entering as much information as available. In this example, entering 94 automatically filters the list to all zip codes containing 94.