Creating a data grid of a certain size

Creating a data grid of a specific size

If you know the size of the data grid you wish to create (X columns by Y rows), you can use the Resize Grid button (don't forget to add an extra column and row for the header cells); click and drag the cursor down and to the right to select the number of columns/rows:

You can then enter the data by hand, or copy/paste it from elsewhere.