Keeping more than one group together?

[Lyonheart]

you guys who 10box+ ..how do you keep them together? You cant quest in raids..do you form as a raid, then separate? that works if your going to be in the same zone for awhile. But when i zone into a new zone it almost always separates my two groups into different phases. I am doing 2 teams of 4 druids. Prepping/practicing for herbing on 8 druids for shadowlands ( if they don't nerf the multitap thing )

Actually, any tips/advice for boxing two groups would be appreciated. I plan on leveling two teams of 4 doing quest as well during shadowlands. ( only 8 due to one bnet ) no plan to add 2 more accounts.

Im doing it on one PC btw.