The new Radio group feature allows you to group multiple widgets where only one widget in the group is turned on at a time. Radio groups can be used with any "on/off" widget meaning buttons, LEDs, switches, and the Sustain pedal. You can see an example in this community thread:
You can define up to 99 radio groups. A widget cannot be a member in both radio group and a widget link group. To learn more about this feature, visit the chapter How to add a widget to a Radio Group and see this YouTube Short.