In order to add our own custom DNS records we first need to remove the built in DNS records.
To do this, simply click the red cross icon next to the domain.
Please note, this will remove any DNS records without confirmation, so make sure you make a note of any custom records before deleting them.
You may also need to restore our built in DNS records. To do this simply click the Restore default X records.
Please note, this will remove any conflicting DNS records, but will keep any custom set ones.