Step 1: From the Event page on the right hand side you will see Public Pages.
Step 2: Here you will select from the drop-down box under "Published on Public Page", In this example, it is "accepted teams" you can choose which one you would like.
Step 3: Hit save
On the public page you will now see that the tab name has changed to the name selected in the dropdown.
Below is the screenshot as an example of the top tabs.