Table Wizard
From the menu go to: Tools > Table Wizard...
Quick Edit Enabled...

Tables are defined with the <table> tag. A table is divided into rows (with the <tr> tag), and each row is divided into data cells (with the <td> tag). The letters td stands for "table data," which is the content of a data cell. A data cell can contain text, images, lists, paragraphs, forms, horizontal rules, additional tables etc... See example below.

Rows:
Determines the number of rows you require.

Columns:
Determines the number of columns you require.

Cell Padding:
In the Cell Padding field, specify the number of pixels between the cell content and the cell boundary (or wall). Default padding is 0 pixels for no padding. If using a positive border value, we also recommended you use a positive cell padding value to separate text content from cell wall.

Cell Spacing:
In the Cell Spacing field, specify the number of pixels between each table cell. The default spacing is 2 pixels. Enter 0 for no spacing.

Border:
In the Border field, specify the width of the table border in pixels. Most browsers display the border as a three-dimensional line. If you are using the table for page layout, specify a border value of 0. Keep in mind that borders values above 2 are visually "tacky" at best.

Size and Alignment
Width:
The width field specifies pixels or a percentage value representing the total width of your table as viewed in a browser window. A percentage value allows your table to resize for a given browser resolutions while the pixel value is fixed and will initiate a horizontal scroll bar if oversized.

Alignment:
Use the alignment field to set the horizontal alignment of a cell's, column's, or row's contents. You can align the contents to the left, right, or center, or to the browser's default (usually left).

Optionals
Bg Image (background image):
Use the Bg Image field to select the background image for the table.

Bg Color (background color):
Use the Brdr Color field to select a border color for the table.

Brdr Color (border color):
Use the Brdr Color field to select a border color for the table.

Example:
Using the following table Wizard settings...

Rows:2
Columns:2
Cell Padding:0
Cell Spacing:4
Border:1
Size and Alignment
Width:70% - Percent
Alignment:Center
Optionals
Bg color:#FEF8CB

Results:
Row 1 Cell 1 Row 1 Cell 2
Row 2 Cell 1 Row 2 Cell 2

NOTE: Table cells with no content are not displayed very well in most browsers. In particular if you are using a positive border value.To avoid this, add a non-breaking space (&nbsp;) to empty data cells, to make the borders visible.