It is recommended to create the table with the largest number of columns possible.
After creating the table, right-click the table to open the Table Properties window and reset the table as follows.
It is important to RESET the table to zero!
For the text to be at a distance from the cell borders, define cell margins using the Cell Properties option NOT AT TABLE LEVEL.
If you are using the Preferred width option, make sure the table size fits the page size and use Measured in Centimetres/Inches (not Percent).