I'm a bit confused which macros actually get loaded for the toon. Is it the macros under the Character or the macros under the Group?

I'm assuming it's for the character, but that leads to a couple more questions. If it is the Character, then why even have macros at the group level? Can't you just include them all and just use the Character to filter what is available and what isn't?

What happens if there is an overlap with the WoW macros? (two getting the hotkey "g" which one wins and actually loaded for the toon?)

Thanks!