I don’t believe the above answer is correct. You can record the pad’s midi notes - the notes are sent if you click them with a mouse. If you set the input of GE’s instrument track to “Groove Agent Midi Out”, GE’s pad notes can be recorded.
You can also create a midi track (in addition to GE’s instrument track) and set the input of the midi track to “Groove Agent Midi Out”.
In order to hear the recorded midi track, the output of the midi track s/b set to “Groove Agent Main”.