Ok, I'm fairly new to macros, I've only written full blown addons in the past.

I have 4 warlocks:
W1, W2, W3, W4

They are identical in spec and abilities.

My goals:
1. I want to be able to switch to any of them at any time.
2. Do not depend on party1, because pvp is a goal, or possibly have a 5th person lead the group.
3. Set focus individually
4. Ideally follow focus of any of the 4 warlocks.

The particular keybindings I'd liked to use:
F1 - Target W1's focus
F2 - Target W2's focus
F3 - Target W3's focus
F4 - Target W4's focus

As far as I can tell, there is no such thing as target=party1focus or /assist party1focus. It looks like I'd have to use two keybindings to target with the warlock that has that focus and then have everyone assist him. Any other ideas here?

The first four function keys would also be overloaded to either set focus for an warlock with CTRL-F1 for example. No big deal there.

The goal is really to have 4 focuses for times when I want to pull 4+ mobs and spread my dots out, or once I get around to doing crowd control.

I guess to put it to a concrete example, say W3 has seduced something. And it is now time for everyone to target W3's focus. Nobody at all at this point is targeting the seductee, is it possible to have everyone switch in a single key?