1) Log into your Bytehouse control centre at https://bytehouse.co.uk
2) Select the tab "Home"
3) Click on "All My Domains" under "Domain Management"
4) Click on the domain name for which you wish to change the DNS settings
5) Select the tab "DNS Zone"
6) If you wish to add a new record click on "New Record" and add the relevant details. If you wish to edit an existing entry, then click on the relevant record and make the changes
The above procedure will be valid only if you are using the name servers of Bytehouse.