This page will cover over the custom theme settings. I personally usually like to create a general settings with a header and footer section. After loging into your dashboard, you will see 'Theme Settings' on the left side.
This section is used to describe general theme settings. I usually let users update their logos here, social media links, contact information, etc.
This section will describe the header theme settings. My header settings usually consist of allowing them to update ny informaiton in a second/utility nav. Maybe a slogan that is present throughout the site.
Similar to header, describe any information that is used to update the footer. Maybe contact info or copyright info.