Not exactly.
The default for creating columns is to create a column that goes from the top to the bottom of the table. So yes, if you create a four-column table, every row will have four columns. However, just like in Excel, you can merge cells to create a row with combined cells that have the impression of having less than four columns. So you've got to bake the cake — and create tables with the same number of columnsfrom top to bottom. But when you're spreading the icing and trimming the cake, you can change the number of columns for any individual row to suit your needs.
To use your example above, you would combine all the cells in the first row to create the Table title row, then combine the first and second cells, and combine the third and fourth cells, to build the "eyebrows" to cover the subsequent four rows of your table. Just highlight the cells you want to combine, go to the Table panel, open the flyaway/hamburger menu at the top right of the panel and select Merge Cells. It's that easy.
Hope this helps,
Randy