Open the Server Manager and click on Manage > Add Roles and Features. Then, choose the Role-based or feature-based installation option and click the Next button. Next, choose the desired server from ...
Because it's not a Windows DDNS box you'll need to have your DHCP server act as a proxy. If you go to the properties of the DHCP server itself (in the DHCP MMC), select the "DNS" tab and check "Enable ...