After that, press the CTRL + SHIFT+ +(plus) button from your keyboard and you will get a pop-up.
Now, select the “Entire column” option and click ok.
At this point, the column has been inserted to the left of your selected column cell.
My favorite shortcut method to insert the column(s) is by selecting the whole column with a shortcut key to the left of which you want to insert the column.
For this, First, click on any cell within the column and press CTRL + SPACE key from the keyboard and you will find that your whole column is now selected.
Now, release the CTRL+ SPACE key and press and hold both the SHIFT + CTRL key, and press + (Plus Sign) from the keyboard.
At this point, the column has been inserted to the left of your selected cell.
Tip: You can press + (Plus Sign) multiple times to insert multiple columns while holding the SHIFT + Control.