Google Sheets Tutorial – How to Enable Multiple Selection Data Validation Using Apps Script

In this article I will show you how to allow for multiple items to be selected using the drop-down data validation feature in Google Sheets. Here's the Google Sheet [https://docs.google.com/spreadsheets/d/1yxc4k1x5idcS_moQ1Bq8LnHGZF2nm9dpARglY7Rv0UI/edit#gid=390071620] we'll use for the example. You can make a copy of this to edit yourself by clicking File ->...

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