You can change the nameservers of your registered domain from client area itself. For that, you will need to log in to your client area. If you do not know how to log in then follow these instructions.
- Once you log in, click on Domains

- Click on the three dots and Manage Domain next to the domain to change nameservers.

- Click on Manage domain → Nameservers.

- Click on Change Nameservers to apply the changes.

