MACROMEDIA STUDIO 8-EXPLORING STUDIO 8 Manual page 172

172 Tutorial: Creating a Table-based Page Layout
7. In the Property inspector, enter 24 in the Cell Height text box and press
Enter (Windows) or Return (Macintosh).
You should now have three rows of differing heights in the first table.
Next you'll set properties for the second table (the table that contains
three columns).
8.
Click once inside the first column of the second table.