general tagging rules explained?

Im a bit confused because everyone i ask tells me something different about it. When multiboxing with 8 chars on one spot :
Could someone please clarify what the right way is?

a.) 2 groups of 4 people?
b.) 2 groups of 4 people in a raid? Better for cross healing but doesnt work?

c.) 1 group of 5 and 1 group of 3?
d.) 1 group of 5 and 1 group of 3 in a raid ?

tnx guys :)

Your only option is A, 2 groups of 4.

Heres the post on legion tagging, far as I know thats when the rules changed and haven't again since then.
https://www.dual-boxing.com/threads/...les-for-Legion

edit: If you're standstill farming, raid may work. Wont for WQs.