Managing Your Campuses
The links for both your Splash page and selector in the site header are managed under Content > Link Lists > Splash Links.
Within the list, you will see an item for each subsite, and the pencil icon allows you to edit the title and link for each item.
Help Site: Editing Link Lists
Splash Page Rotator
The rotator for the Splash page is managed under Media > Rotators > Homepage.
Help Site: Rotator Overview