Format only part of a page?

Hi guys, I want to format only part of a page by dividing it into 4 separate columns.

The reason I only want to format part of the page is that I want to have a table at the top of the page with two wide columns that span the width of the page, then I want the page separated into 4 columns afterward.
However, when I format the page into 4 separate columns the table at the top of the page gets crammed into the first column, hence the need to format the page from after said table.

Many thanks.

Insert a section and in the Format section window, set columns to 4.