- Log in to your Customer Area "https://clients.genious.net/clientarea.php"

- Under the “Domains” menu, click on “My domain names” or Mes noms de domaines

- Click on "Manage domain" or Gérer le domaine, on the line of the domain name in question

- Click on the "Private DNS Servers" button or Serveurs DNS privés on the displayed menu

- Enter the host name of the first Name Server and its IP address, then confirm with "Save the modifications"or Sauvegarder les modifications

- Enter the host name of the second Name Server and its IP address, then confirm with "Save the changes." or Sauvegarder les modifications

- Once the name servers have been created, all you have to do is update the NameServers at the domain level as explained in the article "How do I change my name servers (NS) for my domain name?"
N.B: You must create DNS entries corresponding to your name servers at your server level.