After pressing OK on the Tables Window, the cell populates with the Title name typed i.e. Casing in the above example. In the properties window it is possible to change the name of the Header by typing a new name in the Header Box.
WARNING: It is important to allocate the total amount of required space for the table (based on the target merged cells in the grid) before setting up the table content.
Note that very old templates may have been designed with a percentage value as the width of any columns. Any modern templates should have this value be in millimetres instead.