From the Funnel Dashboard where we assigned the Custom URL. Move the mouse cursor on top of each page of the funnel to see the DASHBOARD option of each page.
From the Dashboard of each page, head over to PAGE SETTINGS to set the URL Extension of each page.
From here you would need to identify the extension of each page. If it is the Homepage of the funnel, Thank you page, Landing Page, Order Page, and so forth.
If you do not set up any of your funnel pages as a HOMEPAGE, whenever you head over to your Domain you will see this message over your website:
For the Whole Process take a look at this screen:
For an instructional video please take a look here: