Well here is what Maintankadin says to do:
Putting it together: A typical pull
1. Prep Seal of Righteousness
2. Avenger's Shield, break line of sight/ have other players counter if the pull involves casters.
2a. If CC is necessary (and it usually won't be), apply it after the AS pull.
3. Judgement of Righteousness on the first kill target.
4. Consecrate, Holy Shield, up a Seal, in this order (to insure timers are appropriately staggered).
4a. If more threat is needed, Seal of Righteousness
4b. For more threat on a longer fight, Seal of the Crusader (Judged immediately, then up another seal).
4c. If more mitigation is needed, Seal of Light (Judged immediately, then up another seal).
4d. If the mobs are runners, Seal of Justice (judged, up another).
4e. If it's going to be a long fight, Seal of Wisdom (Judged, up another).
5. Keep Consecrate and Holy Shield up, rotating seals and Judgements as necessary. Try to maintain active judgements on as many targets as possible, rotating weapon swings between judged targets to maintain them.
6. Throughout the fight try to move your targets a little bit as they die. It can be difficult to loot 12 corpses stacked directly on top of each other.