No that is not correct.. i wish!!

What it is, is there is no "main" so to speak, because there is no /assist /follow macro set up for the specific person main... It is where anyone can be the main, because the macro allows for switching mains, which is impossible with a /follow X when ur trying to switch to character "Y".. the reason for this is when ur main dies and u need to switch over to another character to be a main.. and very fast in pvp...

So, in a sense you have a main, untill it dies, or you want your main to be someone else for specific movements or changing it up in pvp to confuse people.. Hope this helps..

ask someone else how to set this up, because im still working on it..