HOW TO: Cue individual group / Select all steps in step mode / Render HW audio

Ok, mercy me for asking but I am a novice with Maschine and I have tried to find answers to these by googling to no avail.

1) How do I cue (prelisten with headphones while main audio is output through speakers) single groups with hardware? I can cue single instruments (for example selecting first slot from group and then rotating the knob) but if I try to do the same for the whole group it cues every group?! Same happens with software - when you click headphone icon from single group in mixer view it toggles all groups on or off. I find this really confusing. I would like to cue the whole group to audit drum groups for example.

2) When I edit individual steps in step sequence mode I can select individual or multiple steps and then raise/lower step semitones/octaves with shift+pad buttons. But how can I select ALL steps easily without pressing all pads with my 16 fingers? In software you can "paint" everything (or click pattern area and CMD+A) and then do the same by dragging with mouse (or by then using HW buttons) but there has to be a way to select all notes, right?

3) When sequencing extrernal hardware synths I cannot export audio with menu option. It does only quick not-real-time render of everything. How do people manage to live with this? Do I have any other options than reconstructing everything in for example Live to render output properly?

Maschine is really great, I just hope that the arrangement view would be a bit more flexible...