I dug through the archives, so I apologize if I missed this in there. When setting up frequencies for wireless gear I have never used the groups, channels, etc. I always just manually scroll through the frequencies, trying to stay at least 2 MHz apart when possible and trying to use ones that aren't showing any errant RF signal. Is this a bad way of doing it? For the show I'm working on right now we are using Sennheiser ew100's. I know there must be something I'm missing, but I'm wondering if someone could enlighten me as to what it is.