If you type in a two-column Word document, your text will only shift over to the second column once you reach the bottom of the page. If you want to start in the second column sooner, then you simply need to insert a column break. This moves the cursor to the second column; when you start typing, the words will appear at the top of the that column. If you insert the break before any text, then it shifts that text into the next column.
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Click in the text, at the very beginning of the section that you want to move to the second column.
Click the Page Layout tab.
Click the "Breaks" icon in the Page Setup group.
Click "Column" on the drop-down Breaks menu.