The Bulk Update function allows you to update multiple, contiguous cells to hold the same value.
You can choose either to use an existing value in the cell or to enter a new value. All selected cells will update to the new value.
Turn on Bulk Update in the Bulk Update toolbar and select cells in any editable column (e.g. 'Employee'). Then use the Bulk Update dropdown to change all the cells to the new value by clicking the tick.