A number of methods exist to change talkgroups either by using the Four-Way Navigation key or the Rotary Knob (Volume).
Press the left or right side of the Four-Way Navigation key to scroll between all the talkgroups within the currently selected folder. Once the desired talkgroup is displayed, use the Left Soft key to select it.
Press the knob down briefly and then rotate it until the desired talkgroup is displayed. No further action is required, and the control returns to its default operation as a volume control after approximately 20 seconds.