buzztone on "[Plugin: Contact Form 7] divide form into columns"

This is a CSS styling issue. You could create separate <div>'s for each column.

To change the style of your CF7 forms you would need to edit the CSS style sheets used by your WordPress theme.

See Styling Contact Form for a general explanation of styling CF7 forms using CSS. If you are not familiar with CSS, this page also includes some links to where you can learn CSS.