Here are some quick tips for using the set menus. This isn't the easiest part of the manual to follow, but setting the various parameters aren't real hard.
To enter "Set Mode", hit FUNC, then press down on one of the top knobs. A portion of the screen will display a menu item from one of the main categories like, "<SCREEN DISPLAY>" or "<SOUND>" and so on. To change from one menu group to the next, just rotate the top dial. To dive into one of these setup groups to change individual settings, press down on the dial again. If you want to get back to change menu groups again, hit the MONI button on the side. After you dive into a particular menu group, the display changes to the individual settings. For example, if I press down on the dial while looking at the <SOUND> menu group, the first setting displayed is "Beep sound Lv." To adjust the setting, just rotate the lower dial above. If you're finished making the adjustments you want, hitting PTT takes you all the way out of the Set menus, or hitting MONI on the side takes you back to the Menu group selections. It's pretty simple.
There is one menu setting that I found that is not discussed in the manual: Under the <SCREEN DISPLAY> group, there is a setup entry called "Opening String". This item lets you replace the standard DJ-G7 opening screen at boot-up with whatever you want...in English or Japanese. If you stumble across this menu item, it works completely different than all of the other setup menus: Once you have rotated the top dial so this item is showing, rotating the top dial again starts to adjust the first character of the opening string. If you hit any button on the keypad it moves to the next character. When you hit the CLR button, it goes backwards to the previous position. If you hit the SUB button, it clears all of your entries so you can start over. Pressing the MONI button is the only way I found to escape from this menu item once you have completed your changes. This menu item is undocumented at the time of this writing and is a little frustrating. I hope this helps someone.