There is no HOLD button. He was talking about the System or Department buttons. But, yes, those buttons three times quickly.
Thanks Voyager for helping clarify. Sometimes I forget that others don't have the experience yet with the equipment.
And to AC2OY--- sorry if I caused a little confusion. The bottom line is that you can't scroll Systems or Departments unless they are reverse-highlighted in the display. My three-press recommendation assumes that you are scanning and want to stop scanning and start scrolling with the function button/scroll knob. And correct--- there is no HOLD button per say --- that function is invoked by depression of the System, Department and Channel keys.
Obviously there are a couple of other variations depending on whether you are already in HOLD on a particular System or Department (and then only a single press of that particular key is required). If you are already on HOLD on a channel, no additional key presses are required if you want to just scroll through channels, you simply turn the function/scroll knob.
The best way to master the radio is to work with it, which is one of the reasons why the manual appears weak on many points. The reality is that the radio is so powerful and flexible in its operation, the manual can only provide the most cursory instruction--- you've really got to do a lot of hands-on (pushing buttons and spinning knobs, and even pushing knobs) to get a good feel for what the radio does. By the way, it took my several days to realize that the volume and squelch knobs not only turn, be can also be depressed in a number of ways to invoke some of the functions!