Unfortunately, we can not provide full support for all of the domain registrars online. We have elected to show GoDaddy's setup, as they offer a good rate for their domains, do not automatically package their domains with hosting (as many of the "free" domain registries do), and handle inter-site links exactly as it should be in order for your MLSP site to work properly.
However, most registrars have their own support team that should be able to assist you. Use our videos as a guide so you know what needs to be done... then check directly with your registrar's support for additional assistance. Tell them what you're seeking, and they can guide you to where the same controls are located within their site.