Just double checked my macros, and one that I KNOW works (direct copy and paste) is:
Code:
/focus Noginn
/focus Eychaa
/script SetView(5);SetView(5)
This will set my focus to Eychaa unless she is not in my group, then it will focus Noginn instead. All of my leader change macros are set up like this (with varying numbers of names depending on how often I replace certain members).

There IS misinformation in this thread.