In this video, we dive deep into creating the ULTIMATE dependent dropdowns in Google Sheets—completely from scratch using Apps Script! Learn how to build flexible dropdown lists that pull data from a source sheet, update dynamically, and even include a powerful 'Custom' option that lets you clear validation and type anything you want. Perfect for anyone needing more control and flexibility over their data validation workflows.

We cover:
- Setting up source data
- Creating the first dropdown with code
- Building dependent dropdowns that react to the first selection
- Adding a 'Custom' option to let users enter any value
- Best practices for Apps Script data validation

This method is ideal for advanced Google Sheets users and anyone looking to automate dropdown creation and management.

You can find the template from this video in my patreon page, where you´ll also have priority responses to your questions
https://practicalsheets.com/patreon

You can also join my academy practicalsheets.com, where you´ll find, not only the templates for this and all the videos, but also Google Sheets Courses, technical service, and more

You can also subscribe to the channel where you´ll find a new Sheets video every week.

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