In combat follow possible?

Can someone explain how I could set this up? Just to keep the slave toon following during raids (to avoid damage and whatnot)

By default once you have told your slave to follow she will continue. The only real trick is that you can see both toons at the same time so that if one of them is standing in fire you can move so that they follow you out of it. (Or, if they've broken follow at some point, you have to hit the follow button again to get them to follow you and, again, follow you out of fire.)

[Alge]

ISBoxer does not know and cannot tell when you are in combat. Additionally, in WoW many combat actions break follow. Your options are limited to:

a) press your follow hotkey manually (my preferred option - I have follow mapped to a mouse thumb button for ease of access)
b) add follow to your DPS spam (not suggested - this will result in casters failing to cast if they are moving)
c) use the Follow Strobing feature of the Jamba addon (many people use this option, toggling it as needed).