Adding Rows When Using a Column Layout
By default, when you set the layout of a page to use a column layout, the page has a single row in each column. The portlets you add to a column are aligned vertically based on the vertical alignment you specify for the column. However, you might want to add additional rows to one or more columns.
To add a row to a column on a page
1. As system administrator, navigate to and open the page to which you want to add a row.
2. In the page title bar, click 
Tools > Edit Page to switch to page editing mode. 3. Select the View As Expert check box so that you can see the borders and title bars of the rows that you add to the page.
4. In the Tools tab, expand the Layout item to reveal the Row tool.
5. Drag the Row tool into the column where you want it.
The system displays a red box beneath the cursor position to indicate where the row would be positioned if you released the mouse button.
6. Click Save.