If you want to run 3x Ret as DPS, the basic approach would be Interact With Target + Click to Move.
You can go with auto follow, run through a mob, and then turn... which has the slaves on the other side of the mob from that tank.
Both options work, but setting up IWT/CTM lets you choose which method to use and when.

You can post a question or PM me if you want.
People do both.

The IRC on www.isboxer.com will always have people in it.
If you ask a question, and hang out for a while, people will answer if they can.
Most will have the window open, along with other stuff, and periodically check the window/tab.
So you're best off asking something and then waiting a bit.
You can also post on the isboxer forums, which is more likely to get a quicker response from Lax.

I've set mine up (IWT/CTM) like this:
- CTM is always on, for all members of my melee teams.
- I have an Action Target Group, with my melee toons in it.
- I have a mapped key, that sends IWT (warcraft keybind) to the current window.
- I have another mapped key, which I insert into my spam DPS key that is a Do Mapped Key action (the IWT key from the previous step) which is sent to Group (all of) my Melee ATG.
- Then I make a two-step mapped key, that toggles the inserted Do Mapped Key action on or off.

So when I spam, if it is on...
I get the normal FTL Asssist and sends "1" to all windows.
It also attempts to run my IWT Mapped key, for my melee toons.
Who move to the target, because CTM is on.

But I can use my toggle to disable the auto IWT for melee toons.

And still have my normal IWT (target all with current) for manual use of IWT to accept quests, interact with merchants or flight guys or inn keepers, etc.