In order to being adjusting the number of Columns in your Row, or the Row Structure, you must first select the Row of your choice. Once you have your Row selected, you will next go to the Row Structure section of your Content Menu.
Next you have the option to decide the number of Columns within your Row by selecting the icons depicting the number of available Columns.
If you choose to delete a Column we recommend select the "X" tab located at the bottom of the Column of your choice. Please keep in mind once you delete this column, the contents inside of the Column will be deleted as well.