How to insert new column in Google Docs spreadsheet?
Add or insert the new column in the spreadsheet using the following options,
Option 1:
Step 1: Select the column by clicking the column header and right click.
Step 2: Choose the option to insert the column left or right to the selected column.
Option 2:
Step 1: Select the entire column.
Step 2: Click Insert → Column left / Column right
Option 3:
Step 1: Select the cell.
Step 2: Choose any of the above options to insert the column.