Keystroke: Alt + t
There are only two items in the Table menu, Create and Table Properties.
“Create” inserts a pair of codes into your document: [htbs] and [htbe], so that you can enter a table of your own creation. To prevent errors, it is enabled only when the cursor is placed outside of any existing tables in the document.
Contrarily, “Table Properties” is enabled only when the cursor is within an existing table.
Either menu item will bring up the same dialog, for setting or updating the properties of the table.
The difference is simply whether the settings selected will apply to a newly-created table or to an existing table when the OK button is pressed.