Hey guys,
Recently, I've tried my hand at the Pro System. Now, I followed Mirai's videos on setting up the system, and by using action bar commands in my class specific key maps, it works fine. However, I've now come to wanting to utilise the abilities of the ISBoxer addon library, and specifically, the lack of a 255 character limit compared to in game macros. My setup is as follows:

5 toons; 1 Protection Paladin (A), 4 Elemental Shamans (B, C, D, E)

Combat Hotkeys Key Map -> Press 2 for DPS Rotation (key map linked to character set), this part is confirmed working
--Do DPS Rotation in Virtual Combat Key Map -> all
Virtual Combat Key Map -> Virtualized to all toons, to correct class specific Key Map


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For toon A:
Paladin - Protection Key Map -> DPS Rotation fires (key map linked to toon A)
--WoW macro 'DPS Rotation' in 'Paladin - Protection' -> self (this works) (macro linked to toon A)

Macro key combination is Ctrl+Shift+Y

Macro is:
#showtooltip
/startattack

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For toon B, C, D, E:
Shaman - Elemental Key Map -> DPS Rotation fires (key map linked to toons B, C, D, E)
--WoW macro 'DPS Rotation' in 'Shaman - Elemental' -> self (macro linked to toon B, C, D, E)

Macro key combination is Ctrl+Shift+Alt+Y

Macro is:
#showtooltip
/cast Lightning Bolt


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I've tested the macro in game, and it works. I'm also making sure that all toons are sharing the same target as me. The only thing I'm slightly confused on is what key combination to use for each macro, and whether or not it is necessary to set one (I get a warning if I don't)