Learn how to create a user form in Google Sheets using Apps Script and Materialize CSS. In this tutorial we'll add UI elements like Sidebar & Dialog Boxes with a userform to our spreadsheet and pass information from our user interface to our worksheet.
For more advanced user form check out Userform Level 2 Series:
https://www.youtube.com/playlist?list=PLv9Pf9aNgemuzTNWeHd8HziGVNzSlWACh