I would just make it click via tooltip or something that information shown for other mojo's is INFORMATIONAL ONLY, and that each mojo must be configured independently.

Which makes perfect sense btw - when I switch computers (via Input Director software KVM) - the new computer "owns" the keyboard and mouse - so do I want keystrokes to be broadcast from the "current" master?

Master is whatever has "focus" at the time. Once you start thinking this way, its quite simple. Assuming most people use HARDARE KVM switches to manage multiple PCs on one desk, this makes perfect since anyway...