Different columns format within an existing column layout

Hi, As the picture show, I need to start with two columns text layout in a page and in the empty area on the 2nd column, make the remaining into 4 columns for text and small pictures.

Is there a way to do that using columns layout?  I tried to insert section break but section break will split and shorten my initial columnal text and leave the entire bottom area empty.  I only need the right bottom for new columns.

Is inserting a table the only way to achieve this?  I prefer columns so that long text body will flow into the next column in the page.  I really wanted to avoid using linked text boxes because the user of the template tends to mess them up.