You can add text, images, and other content to layout cells in Layout mode just as you would add content to table cells in Standard mode. Click in the cell where you want to add content, then type text or insert other content.
You cannot insert content into an empty (gray) area of a layout table, so before you can add content to a table, you must first create layout cells.
A layout cell expands automatically when you add content that is wider than the cell. As the cell expands, the column that the cell is in also expands, which might change the sizes of surrounding cells. The column width for that column changes to show the width that appears in the code, followed by the visual width of the column (the width as it appears on your screen) in parentheses.
Type text into the cell (the cell automatically expands as you type).
Paste text copied from another document.