Showing different header to logged-in visitors

I'm using your lovely Studio theme, and I have the "header" feature activated. (It's the #strapline div.)

For non-logged-in visitors, I want it to display a "Sign Up!" sort of message. For logged-in visitors, I want it to display an "Invite Your Friends!" sort of message.

I found this thread on WPMU.org -- https://premium.wpmudev.org/forums/topic/conditional-feature-content-logged-in-vs-not-logged-in

Toward the bottom of that thread, there is a zip file. Before I upload its contents into my themes/studio/library/components folder, can you tell me how this is going to interact with the Appearance --> Theme Options area? Is that where I set the logged-in/not-logged-in options?

Please forgive my WP/PHP ignorance. I am learning as I go along.