General Macro Setups for 5 accounts

[Kalyse]

I didn't want to create another post so I have deleted everything in the post. Here is the edit.

My 5 copies of WoW arrive today and I would love to know the direction I'm going in with them for macros.

I have been trying to set them up on trial accounts but just fail epicly every time.

On every character I set up the same macro, so like

/focus master
/follow focus
/assist focus

Then set the same key on every character. is this the correct approach?
So that every key press uses the same spell on the master and on the slaves.