How to add 100 columns at once?

Question

Google Sheets

How to add 100 columns at once?

If the rows are clear, as there is a setting at the bottom, then how to add columns?

Answer 1

Select the desired number of columns and insert the same number of new ones on the left or right. The option is available in the mouse context menu.
An example of how it works https://twitter.com/oshliaer/status/1266371155515981827