How to change my url

Im new to all of this so I thank any and all that post comments in regard to my question. I currently have a site that is running under the url: https://www.palmettodesigncenter.com/ben-moore/ Id like to change the url so that it reads https://www.palmettodesigncenter.com. Can I do this through FTP or is this something that I should do through my host? I am using Godaddy as my host and Filezilla for FTP.
Best regards,
Nick