Social media icons, mailing list sign-up, and contact information are popular content items for the footer. On many layouts, the footer content displays on all pages.
Any content that displays on all pages on the front end is set up via Content > Page Manager > Page Content > search for Default. Click on 'Content & Layout' to the right of the page name.
Hover over Page View and select Footer Top.
The footer content appears. Click edit next to any content section to change social media, contact information, and mailing list sign-up options.
Make any edits or add a new content section using the blue plus sign button. Then, press Publish.
Tip: See the Knowledgebase article on How To: Edit Page Content for additional guidance for modifying content