The footer widget sits at the bottom of every page and actas a backstop. It’s where you will normally find your contact details and links to the admin pages (legal, T&C, privacy etc).
On this site you can see I’ve got my NAP (name, address, phone) plus email and the secondary menu.
To add or edit the Footer Widget you have two options:
- Dashboard > Appearance > Widgets
- Customise > Widgets
In either case you will see the Footer Widget where you can add the appropriate blocks.
If you want columns in your footer use the Columns block.