Well, theres not really a secret to it other than we work our butts off! Our docs have a ton of pressure to keep their "greet times" down, so they put the pressure on us to get workups done and people discharged/admitted. We also triage in the rooms so the provider can get in there quicker. So, most of the time, you walk in, get quickly checked in, then go back to a room immediately.
If we ever get completely full in the back, we triage out front and work protocols to help make things flow faster when they get to the back.