How does a Necro handle adds

[Jupitaur]

Adds giving my level 20 necro some trouble in 2 cases

1) fear kiting in outdoor zones, do you fear and dot up the add. Or feign death

2) cant fear in dungeon like upper Guk and not sure how to handle the adds? Am i supposed to tank them, feign death to pet, do i heal pet?

Halp