Yadonia Group provides an easy tool for managing the A records for your domains. In order to find it log in your Customer's area and go to My Account tab.
Next to your hosting account, click on "Manage". Then you will be taken to a new page with various options. At the bottom of the page you will find "Manage A records". Click on it and you will be guided further into the A records management tool which include all of your domains.
