Hi there,
the basics would be this:
1. Create a new Hook Element
1.1 Add this for your Hook Content:
<div class="navigation-title-container">
<p>My title</p>
</div>
1.2 Select the generate_after_logo
hook
1.3 Se the Display Rules to the Entire Site
2. Add this CSS to hide the title unless Nav is sticky:
.sticky-enabled .main-navigation:not(.is_stuck) .navigation-title-container {
display: none;
}
May require some CSS for tweaking the spacing, alignment and styling – i can take a look once the above is done.