To change your DNS settings, you need access to your domain registrar’s control panel or your web hosting control panel if they manage your domain settings. From there, you can modify DNS records such as A, AAAA, MX, and CNAME. It’s important to proceed with caution and ensure you understand the implications of changes, as incorrect settings can make your website inaccessible. If unsure, it's advisable to consult with or hire a DNS expert.