The footer in the demo have 3 columns. Each column is represented by a different widget area.
Please, configurate each widget area as follow:
Insert the Simple Social Icons Widget and paste the link to your social accounts inside.
Add the Recent Posts Widget and set “3” as number of posts to show.
Add the Text Widget and include a little description your company.
Follow the same steps to include a Header Menu, but select “Footer Menu” as Display Location.