In the previous chapter, you learned about Google Apps Script (GAS) and how to create a script project. In this chapter, you will learn how to create a clickable button, a custom menu, a message box, a sidebar and dialogs, as well as how to debug your script. We will use Sheets for the first two tasks and Docs for all the other tasks.
In the previous chapter, you learned how to open the script editor in Google Sheets. For this task, open the script editor in a newly created or any existing Google Sheet and follow these steps: