To change your DNS as a bulk for your domains you can follow our article below.
First make sure that this zone is not existing yet and that this is the first time you enter the new data of those new nameservers/ip addresses.
After this step you can login to your control panel (RCP) and click on "Manage DNS templates" and followed by. "Add DNS template" as shown as figure 1.
You can add your new nameservers and ip addresses by following the steps in figure 2.
After you have finished the above steps your DNS management should be created. The next step is to update your domains with the new DNS configuration.
Click on "Bulk operations" under the section: "Domain management" and click on "Start new" as you can see in figure 3.
From here you can click "Modify domains" if you would like to update your existing domains with new DNS configurations as you can see in figure 4.
You can choose "Transfer domains" if you would like to move domains to us with the new DNS configurations as you can see in figure 4.