Adding Midi Track to Group Channel

I added a group track to a project Cubase Elements 9. I’m not able to add a midi track to the group track. I’m able to do it with audio tracks. I open the audio track in the Inspector assign it to the group. But I can’t do this with midi. Is there a different way to create a group midi track?

Midi does not have any audio, a group track = audio Bus

Thanks. That worked.