Jamba is an addon (links found in the software section of these forums) that helps tremendously with things like follow, questing, flight, etc. I highly recommend it.

yes - each character needs a button that says "/follow joeblow" and if all your slaves have that button bound to alt-f and you are using some kind of broadcasting software then when you hit alt-f on your main and its sent out to the slaves they will all follow joeblow.

If you've been reading here for two weeks you been reading in the wrong places. there are so many methods used to control all your characters that I can't imagine you haven't even accidently come across a post that would help with this.

Try searching around a bit - I think the one most end up using is FTL - just search on FTL and you' find planty of posts on the subject. Certainly ask questions you may have, but its easier to help you if you have already tried to tackle some of the material.