Was at the airport last week on a 2 class plane, there was a separate line for green members. Right for econ, middle for GR, and left for the rest. Couldn't see the sign though, but saw the ground agent directed some people to the middle line.

On the way back from NRT, as usual the priority line was very long, saw 2 guys were escorting to the front to form a separate line, and asked the agent any priority for DM, and the agent escorted me to the separate line behind the 2 guys as well.