You can easily add a table to a SmartDoc or other template by clicking on the table icon in the text editor. Choose the number of columns and rows (which can be amended as you go).

You can use the table editor to edit the table.

And you can do advanced formatting such as making the lines invisible. To do advanced editing Right Click on the table and choose table properties (Label 1 below).

Alternatively, you can set the Border to Zero in Table Properties.