Changing domains

So I built a website for our organization using the domain dreamsunitedministry.org just until the time where I was able to transfer dreamsunited.org from godaddy to homestead.

That is now done and I want to use dreamsunited.org as the primary domain and forward dreamsunitedministry.org to dreamsunited.org but I can't see to get it figured out how to get it to switch in homestead website builder. Please help :(