Even though a table starts out as a strict grid of cells, you can change a table’s layout by merging multiple cells together, as well as splitting a cell into multiple cells.
You can also split an entire table in two, letting you move part of it somewhere else. You can move the new part to another page, another document, or just add text or images in the space between the split table.
Place the text cursor in the row that you want the second table to start with.
Splitting a table will split it right above the selected line.