# Cascading dropdown

Dropdowns dynamically populated from the same worksheet can now act as an hierarchy and cascade automatically. When selecting a category from a dropdown in a form, the next dropdown for sub-categories will only show relevant values for the previous selected Category. **NOTE**: Do not use the cascaded sheet for displaying and filtering because that messes up the behavior, connect to a separate sheet.

Open the configuration of the extension to link to the sheet that holds the cascading information and choose the category.

<figure><img src="https://appsfortableau.infotopics.com/wp-content/uploads/2022/12/WriteBackExtreme-Cascading-dropdown-2.png" alt=""><figcaption></figcaption></figure>

Your dropdown fill only be filled with relevant data based on the cascaded filter.

<figure><img src="https://appsfortableau.infotopics.com/wp-content/uploads/2022/12/WriteBackExtreme-Cascading-Filters.gif" alt=""><figcaption></figcaption></figure>