If you want to rename an existing room you have first to get this room offline. By closing your wifi connection. Than you can enter a new offline room with the same MAC, IP and PORT and your own name for the room. Before adding this room you have first to delete the earlier one because you cannot have two rooms with the same MAC and IP. Than you can open you wifi again and you have your room named.

Pieter

living: 218, 2x DSP5200SE, 1x DSP3300
study: 218, 2x DSP3200
sleeping: 218
spare: HD621, AC11, DSP33C