Add widgets by going to Appearance → Widgets or in the Customizer’s Widget section.
The footer has four widget areas:
- Footer (Column 1)
- Footer (Column 2)
- Footer (Column 3)
- Footer (Column 4)
You can choose how many columns you want to use by adding widgets to each area. Example: If you add a widget to Column 1 and Column 2 but leave the other two empty, then the footer will have two columns, taking up 1/2 of the width each.
In the example below, all four widget areas are used, so each widget area takes up 1/4 of the width: