Top bar & header customization

Hi Tom,

Thank you for this awesome theme!

I've searched the forums but was unable to find an answer that gave me a clear answer.

To get a visual of what I describe, take a look at the top bar and header here: https://www.ems-usa.com/ (it's also build with GP)

Like above, I want to put some social icons on the left and a (multilanguage using qTranslate-X) "Call Us Today" message on the right in the top bar. Additionally, I want to put a "Contact Us" button on the right in the header (the header logo will be on the left). I do not need the red mail icon on the left.

Currently what I've done is use your lightweight social icons plugin to insert it as a widget in the top bar section, but I do not see any GP Hooks to add content within the top bar, so I seem unable to add the "Call Us Today" message if I go that route. I guess the button could be added with one of GP's header hooks without problems but I haven't experimented yet.

I could go ahead and replicate the code I see in the above site, but I'm trying to use the theme's built-in features (like the top bar) as much as possible, keeping my interventions/customizations to a minimum.

So my questions:
1. In your opinion what would be the best/cleanest approach to go about this, given I would like to use your social icons plugin, and keep interventions to a minimum?
2. If creating a custom top-bar/pre-header is the only way to do this, are the sections/CSS classes that I see on the forum (for example https://generatepress.com/forums/topic/top-bar-2/ or https://generatepress.com/forums/topic/top-barsecondary-navigation-area/) or on the above site documented somewhere? Are they built-in within the theme?

Thanks!