On the Pages panel you can see which Pages you have, add Pages, and change a Page’s settings. You can also duplicate or delete existing Pages.
In the Builder, open the Pages tab
Click + next to Pages.
Choose whether you want to add a Template or Empty page.
In the Builder, open the Pages tab.
Click the three dots icon of the Page for which you want to change the settings.
Enter a new Name or Handle
A Page's Name is the label used in Instant, its Handle is used to create the its URL.
In the Builder, open the Pages tab and click the three dots icon for the page you want to delete.
Select Remove page.
Read the modal that comes up and click Remove if you still want to remove the page.