domains to my funnels

How do I add a domain to my sales funnel?
https://v96.290.myftpupload.com/electronics-shop-landing/

When I create a new sales funnel can I add a new domain to that funnel?
https://v96.290.myftpupload.com/product02/

When I add a domain to my website: I.E. : www,mywebsite.com/shop/shopname/ and then add a theme for “mywebsite” will it break my funnels?

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