To set a custom domain for your Public Page navigate to your you settings on the left side navigation menu.
On the General tab toggle on Custom Domain. The toggle will turn green, and a URL address bar will appear below.
Next, enter a custom domain URL and select Save Changes below.
Your custom domain will update immediately, and your audience will now be able to locate your Public Page using the custom domain you created.
Important: Your DNS changes can take up to 72 hours to update and the wait varies among DNS and hosting providers.