I don't think hall of the novice ever taught me to take enmity off dps, it did teach to use ranged tools to grab enemies from healer before they get hit due to them healing. It also teach to use ranged tools to pull groups so you don't get overwhelmed and to use aoe when there is 3 or more targets and how to position yourself for it... But double checking seems it did try to teach to use aoe then the combo on multiple enemies, i just had other guides in my head so kept using aoe ^^"
And checking the dps exercises i don't see any of them being about taking enmity off the healer. But more to support the group as a whole by focusing down enemies that target the weakest member. both have the same mission but completely different priority in the novice exercise.