Is there a way to either remove the menu for one page or ……

Running Clean Education Pro (child) on WordPress 4.9.7. I have a site under dev (https://new-drsophiayin.iouxbfo4-liquidwebsites.com) that isn't going to be live for a few months. However, we have a graduate directory (https://new-drsophiayin.iouxbfo4-liquidwebsites.com/lsh-certified-directory/) using the "Business Directory Plugin" (https://businessdirectoryplugin.com). The directory is configured, populated and ready to use even though the site isn't yet. Here is the issue. The boss is demanding the directory go live somewhere (we have two other websites, one of which is being replaced by the one under dev) and I don't want to move it. Since the page that it sits on is done, is there a way I can remove the menu on that page only so that I can link to the directory from other sites, then put links back to where they came from? Or is there a way to be able to have the directory I have installed show up on another website on the same host that is also using the same exact theme via frames or the like? I am not much more than an amateur so apologize if I have the terms wrong.