How can I set up a custom domain with my form?

Hi, I am forwarding my form to a domain name I bought through godaddy and I was able to do this successfully, but it did not do it with masking. What do I need to do to accomplish this? Forwarded domain is www.horizonsdigitalsolutions.com

Thanks

Please check this guide that will help you with that: https://www.jotform.com/help/144-How-to-use-Custom-Domains-with-Jotform 

Now, you may need to consult with your domain service provider how to add the CNAME record. 

I hope this helps.