Please see https://cp.thenames.co.uk/kb/servlet/KBServlet/faq580.html for information about managing DNS records on your doman name.
Please see https://cp.thenames.co.uk/kb/servlet/KBServlet/faq455.html for information on how to change the nameservers on your domain name
Upon modifying your domain name’s Name Servers or DNS records, your website would begin appearing in a web browser, after about 24 to 48 hours (provided your Web Hosting package is properly setup and you have uploaded the content of your website). This is a standard time-frame required for a process called DNS Propagation to complete Worldwide. This process is not controlled by any one ISP/company and therefore it cannot be hastened.