Maybe is a stupid question but today i've stardted

Hi
Maybe is a stupid question but today i've stardted in a multisite enviroment, and iwas watching your video tus in youtube about prosites.
My problem in settings at the begining tell us about to change
"rebrand pro-sites" and "admin menu button label". Ok i've tried just for testing, but i couldnt see where they are displayed.
I've enter as a admin, as a user, but i can't see the changes.

Where they are displayed??

Thanks