We have THREE footer rows. The first two rows are the widget area where you can add subscription, address columns, company logo, footer menu.
First footer row
The First Footer row will show widgets. It is recommended to have maximum 4 columns. You can add multiple widgets in each column. Just go to Admin > Appearance > Widgets section and add widgets in it.
Second footer row
The Second Footer row have widgets. It can show upto 4 columns. You can add multiple widgets in each column of your footer. Just go to Admin > Appearance > Widgets section and add widgets in it.