From time to time you have annoying things to do which you cannot avoid e.g. split names into surname and last name.
Here comes the flash fill feature:
Given you have the full names in column A
- Go to cell B1 and enter the last name
- Go to B2
- Go to tab “Data”
- Click Flash Fill (or Ctrl + E)
The rest of the B column should be filled with the last names
Repeat for first name in column C