I think I found what this post refers to, and can give the path that worked for me.
In the main Dashboard menu on the left – toward the bottom, I went to
[Theme name] > Theme Customizer > Header & Navigation > Header Elements
Header Elements shows 2 checkboxes (Show social icons, show search icon) and 2 fields (phone number, email) I typed an email and clicked “Save & Publish” to try it. A blue bar appeared at the top of my site, about 20-30 pixels high, with a phone icon (no number, since I hadn’t entered one) and an email icon with and email address (since I had).
It was just a test, and I decided I didn’t like it, so I deleted the email address, clicked “Save & Publish” and the blue bar vanished.
Hope that helps somebody.
p.s. I am using WP 4.3 and my theme is Divi 2.4.