First, let us add a menu item to your Google sheet so that it … Google Forms. Notification add-on: Displays a notification when you install the new app, you can add to the launcher menu quickly. Send data from spreadsheet to client side sidebar window. "Auto Category" is the group that contains installed apps, was grouped by category of Google Play. Updating the menu with custom buttons SpreadsheetApp.getUi. In the top right, click More. Add additional functions and menu items. Start a container-bound script from a spreadsheet by choosing Tools > Script editor - … You can add an "Add-On" menu item to a Google Spreadsheet or Doc, without publishing an Add-On, and that Add-On menu item will run any code that is in that document, just like an add on. Open a form.

Create html page to send data using google.script.run. Click Add-ons. You can add custom menus to Google Docs, Sheets and Forms. And to do that, you need to add the function script in the Google Sheets script editor. All you need to do is share the Project Key. You don't need to do anything to create a Library. Adding the Google Apps Script to Enable Multiple Selections When you add the menu to the UI, it appears in Google Sheets: When a user clicks a custom menu item, the Apps Script function you associated with it executes. Click Add-ons Manage add-ons. Auto category add-on: It is the additional item in the launcher menu. Next to the add-on, click Options Use in this document to turn the add-on on or off. In Google Forms, custom menus are visible only to an editor who opens the form to modify it, not to a user who opens the form to respond. This is a handy way of causing Apps Script functions to run without having to open the script editor. Next to the add-on, click Options Use in this document to turn the add-on on or off.
The sidebar UI showSidebar. Get Coding Google Apps Script quick introduction to accessing your Google Script Environment. In the top left, click Menu Manage Apps. This article shows you different ways to get cell values from the Google Sheet. Superuser add-on: Add ACCESS_SUPERUSER permission. Get selected cell value in your Google Sheet Script. Every Apps Script project is available as a Library.

Now let me show you how to convert this drop-down (which allows only one item to be displayed in the cell) to the one that allows multiple selections.
Some of the methods (like getCell(row, col) ) will be easier if you want to iterate through the cells.