Select a cell (or range of cells) from a sheet and press Ctrl + C to copy it to your clipboard. Press Ctrl + V paste the value into an existing sheet cell or range.
This function only works with text-based column data, such as row key, text, and number columns. It can’t be used for magic columns.
The first time you try this, your browser might prompt you to grant clipboard permission.
You can also use the fill handle to copy a value into adjacent cells on the sheet.