Steps

  1. Open the presentation in the editor.
  2. In the left rail, choose Table. The panel title is Table.
  3. The line says Pick a size and style, then add the table. You can edit cells and borders on the slide afterward.
  4. Set Rows and Columns.
  5. Choose Add table. The table is added to the slide.

Only if you want to start from a file

Choose Import CSV or Excel…

The line says Import data first if you want to prefill cells before adding.