The reason the 15X does that is so that it can display the PL, DT, HP & BT icons on the bottom row. Uniden could have designed it to show the groups when POL & HP are turned off, but I doubt if that will happen. You can have the groups displayed by pressing the FUNC knob in for 3 seconds and the Group list will appear and the scanner will stay in that system, like System Hold Mode. To exit press in the FUNC knob once.